Câu hỏi: The assumption that smoking has bad effects on our health have been proved.

A. that

B. effects

C. on

D. have been proved

Câu 1: By the time Robert will finish writing the first draft of his paper, most of the other students will have completed their final draft.

A. will finish

B. writing

C. most

D. their

Câu 2: If you work hard, you would be successful in anything you do.

A. you work

B. would be

C. in

D. anything

Câu 3: It is vitally important that she takes this medication night and morning.

A. vitally

B. that

C. takes

D. medication

Câu 4: The earth is the only planet with a large number of oxygen in its atmosphere.

A. the

B. number

C. oxygen

D. its

Câu 5: Not until he got home he realized he had forgotten to give her the present.

A. got

B. he realized

C. her

D. the present

Câu 6: Some species of bats are dormant each days and active every night.

A. species of

B. each days

C. every night 

D. are dormant