Adjectives And Adverbs

A. well ✓

Adverbs modify verbs and describe *how* something is done. "Speaks" is a verb, so we need an adverb. "Well" is the correct adverb form meaning "in a good manner."

B. good — This is an adjective, not an adverb. You'd use "good" to describe a noun (e.g., "She is a good speaker"), but not to modify the verb "speaks."

C. goodly — This is an archaic/rare word meaning "of pleasing appearance." It's not the standard modern adverb for describing how someone does something.

D. wellly — Not a real word. You can't just add "-ly" to "well" since "well" is already an adverb.

Correct answer: A. quickly

• Adverbs modify verbs (actions), and we need one here to describe *how* he runs. Adverbs are typically formed by adding -ly to an adjective.
• B (quick) is an adjective, not an adverb—it describes nouns, not actions.
• C (quicker) and D (quickest) are comparative and superlative forms used to compare speeds between people or things ("he runs quicker *than she does*"), but this sentence has no comparison.
• Quickly is the standard adverb form that correctly modifies the verb "runs."

Correct answer: A. happier

"Happier" is the comparative form of the adjective "happy," which is used when comparing one person's feelings to another or to their usual state. The sentence needs a word that describes *how* he's feeling right now—more happy than usual or more happy than someone else.

Why the others are wrong:
- B. happyly – Not a real word; adverbs describing manner use "-ly," but "happily" (not "happyly") is an adverb, not an adjective.
- C. happiest – This is the superlative form (the *most* happy), used only when comparing three or more things; we don't know if he's the happiest person overall.
- D. more happy – While grammatically possible, it's unnecessarily wordy; short adjectives like "happy" use the "-er" ending (happier) rather than "more."

Why A is correct:
"Comfortable" has three or more syllables, so it uses "more" + adjective for the comparative form (comparing two things), not "-er." The sentence "This chair is more comfortable" correctly compares this chair to another.

Why the others are wrong:
- B (most comfortable): "Most" is for superlatives (best of three or more), not comparatives (better than one other thing).
- C & D (comfortabler/comfortablest): Only short adjectives (one syllable, or two syllables ending in -y) can add "-er" or "-est." "Comfortable" is too long, so these aren't real forms.

A. the happiest ✓

When a one-syllable adjective ends in a consonant preceded by a single vowel, we double the final consonant and add "-est" to form the superlative. "Happy" becomes "happi-" (double the p) + "-est" = "happiest."

B. the most happy - This is grammatically acceptable but awkward; we don't use "most" with short adjectives like "happy."

C. happilyest - This mixes up the adverb form "happily" with the superlative ending; it's not a real word.

D. happiestest - This incorrectly adds "-est" twice, which is never correct in English.

A. good ✓

• "Good" is an adjective describing how you feel (your state/condition), so you use the base form.
• B. gooder – Not a real word; the comparative form of "good" is "better," not "gooder."
• C. goodest – Not a real word; the superlative form is "best," not "goodest."
• D. best – This is the superlative form, used only when comparing something to all others (e.g., "This is the best day"). Since you're just describing one feeling, you need the base adjective instead.

A. well ✓

"Speaks" is a verb, so you need an adverb to describe *how* he speaks. "Well" is the adverb form.

Why the others are wrong:
- B. good — This is an adjective (describes nouns), not an adverb. You wouldn't say "speaks good."
- C. better — This is the comparative form, used when comparing two things ("He speaks better than she does").
- D. best — This is the superlative form, used for the highest level ("He speaks the best in the class").

A. better ✓

You're comparing two people's dancing ability, so you need the comparative form of the adjective/adverb. "Better" is the comparative—it's used when comparing two things.

Why the others are wrong:
- B. good – This is the base form (positive), not for comparisons
- C. well – This is the adverb form, but it's not comparative; it doesn't show comparison between two people
- D. best – This is the *superlative* form, used when comparing three or more things (e.g., "She dances best of all")

A. quickly ✓

• "Runs" is a verb, so you need an adverb to describe *how* he runs. Adverbs end in "-ly" and modify verbs.
• B. quick is an adjective (describes nouns, not verbs).
• C. quicker and D. quickest are comparative/superlative forms used to compare two or more things ("He runs quicker than his brother"), not needed here.

A. fastest ✓

• The sentence uses "ever," which signals a superlative comparison (comparing more than two things). The superlative form of one-syllable adjectives like "fast" is formed by adding -est.
• B (fast) is the base form; it doesn't show any comparison.
• C (faster) is the comparative form, used when comparing only two things ("this car is faster than that one").
• D (most fast) is incorrect because one-syllable adjectives use -est, not "most" (that's for longer adjectives like "most beautiful").