Câu hỏi: Chris is…………………than his brother.

A. short

B. shortest

C. the shortest

D. shorter

Câu 1: Biology is…………………..of all my classes this semester.

A. the hardest

B. harder

C. hardly

D. harder than

Câu 2: You should wear this dress because it’s……………..that one.

A. elegant

B. the most elegant

C. more elegant than

D. the elegant

Câu 3: Bill ordered two .....................  pizzas.

A. large

B. largeness

C. largely

D. largest

Câu 4: These are very .................... chairs.

A. comfort

B. comfortably

C. comfortable

D. comforts

Câu 5: Steve ate his dinner .................. 

A. quick

B. quickly

C. quicken

D. quickened

Câu 6: Elizabeth sounded ................. on the telephone last night.

A. happens

B. happening

C. happy

D. happily