Past Tenses

A. watched ✓
The sentence describes a completed action in the past ("all evening" is finished), so you need the past tense. "Watched" is the correct past tense form of "watch."

Why the others are wrong:
- B. watch – Present tense; doesn't match the past timeframe
- C. watches – Present tense, 3rd person singular (like "he/she watches"); wrong tense and wrong form for "they"
- D. watching – Present participle; needs a helping verb like "were" (they were watching) to work here

# Explanation

A. see ✓ — Correct. After the auxiliary verb "didn't," you need the base form of the verb. "Didn't see" is the proper past tense construction.

B. saw — Wrong. "Saw" is simple past tense, but you can't use it with "didn't." You'd say either "I saw" (simple past) OR "I didn't see" (past with auxiliary), never "didn't saw."

C. seeing — Wrong. This is a gerund/present participle form. It doesn't work with "didn't"—you need a base verb form after an auxiliary.

D. seen — Wrong. "Seen" is a past participle, which requires a helping verb like "have" or "had." You'd say "I haven't seen" or "I hadn't seen," not "I didn't seen."

A. Did ✓
This is correct because the sentence needs a past tense auxiliary verb. "Did you meet your friend?" asks about something that already happened.

B. Do ✗
"Do" is present tense, but the context (meeting a friend) suggests a completed action in the past, not a general habit or present time.

C. Does ✗
"Does" is third person singular present tense (he/she/it). You wouldn't use it with "you," and it's still present tense when we need past.

D. Have ✗
While "Have you met your friend?" is grammatically possible, it uses present perfect. Without other context clues, "did" is the most straightforward past tense form for this question.

A. was having ✓

This uses the past continuous tense, which describes an action in progress at a specific moment in the past. The phone rang (simple past) *while* she was having a bath (ongoing past action)—perfect for showing two things happening at the same time.

B. had – Wrong tense. "Had" is simple past and suggests the bath was already finished before the phone rang, not happening at the same time.

C. has – Wrong tense. Present perfect doesn't fit a past situation. This would mean the bath is still relevant to now, which doesn't match the story.

D. is having – Wrong tense. Present continuous describes something happening right now, but the phone rang in the past.

B (wore) is the correct answer.

• Was wearing (A) describes an action in progress at a specific past time, but the sentence needs a simple past action that happened and completed.
• Wore (B) is simple past—the right tense for a completed action "yesterday." ✓
• Is wearing (C) is present tense, but "yesterday" is clearly past.
• Has worn (D) is present perfect, which links past to now—but we need simple past for a finished action on a specific day.

# Explanation

Why A is correct: You need the past perfect tense ("had started") to show that the party started *before* you arrived—two events in the past, with one happening first. "Had" is the correct past perfect auxiliary.

Why B is wrong: "Has" is present perfect, which describes something that started in the past but continues now. It doesn't fit because you're talking about a completed past event.

Why C is wrong: "Have" is also present perfect (and wrong person—you'd never use "have" with "we" in this context anyway).

Why D is wrong: "Had been" starts the past perfect *passive* voice ("had been started"), which is unnecessary here. The simple past perfect ("had started") is more direct and natural.

Correct answer: A. had been playing

This sentence needs the past perfect continuous tense because it describes an action that started in the past, continued for a duration (twelve hours), and then ended before they became exhausted. "Had been playing" shows the continuous action leading up to their exhaustion.

Why the others are wrong:

• B. played – Simple past, but doesn't show the continuous nature or the duration of the activity
• C. had played – Past perfect, but doesn't emphasize the continuous/ongoing nature of the twelve-hour activity
• D. have played – Present perfect, but the exhaustion is clearly in the past, not the present

Used to is correct because it's the special phrase for repeated habits in the past. It means "did regularly in the past but doesn't now."

• Uses to - wrong tense; "uses" is present tense, but you need past
• Use to - wrong form; "use to" isn't a real verb phrase (it's only correct in negative: "didn't use to")
• Used - incomplete; by itself it doesn't express the habitual past meaning; you need the full phrase "used to"

A. got used to ✓
This is correct because "got used to" means she *became accustomed to* the noise over time—it describes a process of adapting after moving.

B. used to ✗
"Used to" refers to a repeated past habit ("she used to go to the park"), not adapting to something new.

C. was used to ✗
"Was used to" means she *already was* accustomed to the noise before moving, which contradicts the sentence's meaning.

D. uses to ✗
"Uses to" isn't a real English phrase; "used to" exists, but not "uses to."

A. had ✓

Why it's correct:
"Had" is the past tense form needed here. The sentence means she arranged for someone else to service her car (causative structure: "have + object + past participle"). "Last week" signals past tense.

Why others are wrong:
- B. have – Wrong tense; "have" is present tense, but "last week" requires past
- C. has had – Present perfect tense, but this describes a completed action in the past, not something ongoing to now
- D. having – This is a gerund/participle form and doesn't work as the main verb here

Correct answer: A. was built

This sentence needs the passive voice because the focus is on the house being built (the action done to it), not who did the building. The passive voice uses "was" + past participle ("built"), which correctly shows a completed action in the past.

Why the others are wrong:
- B. build – Active voice, present tense; doesn't match the past time reference ("19th century")
- C. built – Missing the auxiliary verb "was"; this alone is just a past participle, not a complete passive verb
- D. was building – Passive form but indicates an ongoing/incomplete action; the house is finished, not still being built

A. went ✓
Past tense is required here because "last night" is a completed time in the past. "Went" is the simple past tense of "go."

Why the others are wrong:
- B. go — Present tense doesn't work with "last night"
- C. gone — This is a past participle and needs a helping verb (like "have gone")
- D. going — This is a present participle and doesn't work for a finished past event

Why A is correct:
Both verbs need past tense because this is a story set "once upon a time" (a signal for past events). "Was" (past) and "wanted" (past) match this timeframe.

Why the others are wrong:
- B (is - wanted): Mixes present tense ("is") with past tense ("wanted") — inconsistent and confusing.
- C (was - wants): Mixes past tense ("was") with present tense ("wants") — inconsistent and confusing.
- D (is - wants): Both present tense, but "once upon a time" signals a past story, not something happening now.

A. found ✓
This is the simple past tense of "find." Since the sentence says "yesterday," we need the past tense form, and "found" is the correct irregular past tense.

B. find ✗
This is present tense ("he finds"), but the sentence requires past tense because it happened "yesterday."

C. finded ✗
This isn't a real word. "Find" is an irregular verb, so we don't add "-ed" to make the past tense.

D. founded ✗
This is a real word but means "established" or "created," not "located/discovered." It doesn't fit the meaning here.

A. had already started ✓

This is correct because it uses past perfect tense, which shows that the rain started *before* we left (two past events, one clearly before the other).

Why the others are wrong:

• B. has already started – Present perfect suggests the rain's effect continues to now, but the sentence is about a completed past event.
• C. is already starting – Present continuous doesn't fit; we need to describe a past moment, not something happening now.
• D. started – Simple past works grammatically, but it doesn't show that the rain started *before* we left; it just lists two events without showing which came first.

A. read ✓ Correct
"Read" is the past tense of the verb "read." The phrase "last month" tells us this happened in the past, so we need the past tense form.

B. reads ✗ Wrong
This is present tense ("she reads every day"), but the sentence says "last month," which is past time.

C. readed ✗ Wrong
"Readed" isn't a real word. "Read" is an irregular verb, so its past tense is just "read" (pronounced differently), not "readed."

D. red ✗ Wrong
"Red" is a color, not a verb. It doesn't make sense in this sentence.

Correct answer: A. were eating

You need a past continuous verb form (was/were + -ing) because the sentence describes an action already in progress when the power went out. The power outage interrupted the dinner that was already happening.

Why the others are wrong:
- B. eats – Present tense; doesn't fit a past event
- C. eat – Base form; grammatically incomplete and present tense
- D. ate – Simple past; suggests the dinner was finished before the power went out, but the sentence structure ("while they...") shows the two events happened at the same time

Correct Answer: A (had)

This sentence needs the past perfect tense to show that one past event (the movie starting) happened *before* another past event (their arrival). "Had started" is the correct past perfect form.

Why the others are wrong:
- B (have) and C (has) are present perfect tense—they describe recent actions in the present, not two events in the past
- D (had been) is past perfect continuous, which would mean the movie was still playing when they arrived; "had started" is simpler and more accurate here

Correct answer: A. had been driving

This sentence needs the past perfect continuous tense because it describes an action that started in the past, continued for a duration, and was still ongoing when another past event happened (we arrived). "Had been driving for hours" shows this completed duration leading up to our arrival.

Why the others are wrong:
- B (has been driving): Uses present perfect, which doesn't fit—the tiredness happened in the past, not recently/now
- C (were driving): Simple past continuous shows an action in progress, but doesn't emphasize the *duration* or that it was completed before we arrived
- D (drove): Simple past is too basic—it misses that the driving lasted for hours and caused their tiredness

Correct answer: A. had been playing

This sentence needs the past perfect continuous tense because it describes an action that started in the past, continued for a duration ("all evening"), and was still ongoing at a specific past moment. "Had been playing" shows this extended, unfinished action.

Why the others are wrong:
- B. played — Simple past; doesn't show the action was continuous throughout the evening
- C. were playing — Past continuous; describes an action at one moment, not over an extended period like "all evening"
- D. have played — Present perfect; incorrectly places the action in the present rather than the past

Correct answer: A. used to play

"Used to" describes a repeated action or habit in the past that no longer happens—perfect for something she did as a kid but doesn't do now.

Why the others are wrong:
- B. plays – Present tense; suggests she plays now, not in the past
- C. has played – Present perfect; doesn't clearly show this was a past habit that stopped
- D. playing – Not a complete verb form; needs a helping verb like "was" or "used to"

Correct answer: A. used to ride
- "Used to + verb" is the correct structure for describing repeated habits or actions in the past. It means something you did regularly back then but don't do now.

Why the others are wrong:
- B. was used to ride — "was used to" means you were accustomed to something (e.g., "was used to cold weather"), not that you did something repeatedly.
- C. use to ride — Missing the "d" in "used"; the correct past form is always "used to," not "use to."
- D. used ride — Missing the word "to"; you must include "to" between "used" and the verb.

A. got used to — Correct. This phrasal verb means "became accustomed to." The sentence describes a change over time (she adapted to the cold), which requires the "got used to" form.

B. used to — Wrong. This means "did regularly in the past" (e.g., "She used to play tennis"), not "became accustomed to."

C. was used to — Wrong. This means "was already accustomed to," implying she was already familiar with cold weather before moving. The word "quickly" suggests a process of adaptation, not something she already knew.

D. was used — Wrong. This is incomplete and doesn't form a proper expression; "was used" by itself doesn't work in this context.

Why A is correct:
"Had" is the correct past tense form needed here. The sentence means he arranged for someone else to paint his house (a past action), so you need the simple past tense "had."

Why the others are wrong:
- B (have): Present tense; doesn't match the "last summer" timeframe.
- C (has): Present perfect; also doesn't work with "last summer" (a completed past time).
- D (had had): Past perfect; this is only used when you need to show one past action happened *before* another past action. Here, there's only one main past event, so it's unnecessary.

# Explanation

A. was baked ✓
This is correct because the sentence needs the passive voice (the cake is receiving the action). "Was baked" is the past tense passive form, showing the cake was made by someone else in the past.

B. bake
Wrong—this is the base form of the verb, which doesn't work in this sentence structure. You need a past tense form.

C. baked
Wrong—this is simple past active voice ("the cake baked"), but the cake didn't bake itself. The sentence structure requires passive voice because the sister did the baking.

D. was baking
Wrong—this is past continuous passive, which suggests an ongoing action ("was in the process of being baked"). The sentence calls for a completed action, not one in progress.

A. went ✓ Correct
This uses past tense, which matches "last night"—Jenna is talking about something that already happened.

B. go ✗ Wrong
This is present tense ("I go"), but the sentence says "last night," so it doesn't fit the time.

C. goes ✗ Wrong
This is third-person present tense (he/she/it goes), but Jenna is talking about herself ("I"), so the wrong person and wrong tense.

D. going ✗ Wrong
This is a gerund/continuous form, not a complete verb on its own. You'd need "was going" or "am going" to make sense.

Why A is correct:
"There was" is the correct past tense form. "A car accident" is singular, so it needs the singular past tense verb "was."

Why the others are wrong:
- B (were): This is plural past tense, but "accident" is singular, not plural.
- C (is): This is present tense, but the sentence says "last night" (past), so we need past tense.
- D (had): This doesn't work with "there." We use "there is/was," not "there had."

Correct answer: A. had been

This sentence uses reported speech (she told me that...), and the action happened *before* the telling. You need past perfect ("had been") to show that going to China happened earlier than the conversation.

Why the others are wrong:

• B. was — Simple past doesn't show the time relationship clearly; it sounds like she went while she was telling you.
• C. has been — Present perfect doesn't fit reported speech about a past event; it's for recent events connected to now.
• D. is — Present tense makes no sense in a past conversation about something that already happened.

Why A is correct:
"Had studied" is past perfect tense—it shows an action completed *before* another past event (moving to France). The phrase "for five years before moving" requires this tense to show the sequence clearly.

Why the others are wrong:
- B (studied): Simple past doesn't show that studying ended *before* the move; it could suggest they happened at the same time.
- C (has studied): Present perfect doesn't fit—there's no connection to the present, and "moving" is clearly a past event.
- D (is studying): Present continuous makes no sense here; she's not currently studying while this past event happened.

Correct answer: A. sailed

This sentence needs the past tense because it describes something that happened in 1492 (a specific time in the past). "Sailed" is the correct past tense form of "sail."

Why the others are wrong:
- B. sailing — This is a gerund/present participle; it doesn't work as the main verb in this sentence structure.
- C. sail — This is the base form; it only works with "I," "you," "we," or "they" in present tense, not with "Columbus" in the past.
- D. sails — This is present tense; it describes something happening now, not something that happened 530 years ago.