Câu hỏi: The participants must find _______________ all the answers in order to go in the next round.

A. out

B. up

C. of

D. by

Câu 1: The bomb went____________ killing several by-standers.

A. off

B. of

C. to

D. by

Câu 2: She insisted ___________ him wearing the red tie.

A. at

B. with

C. by

D. on

Câu 3: He admitted having opened the suitcase ______________ asking its owner.

A. without

B. by

C. with

D. off

Câu 4: This area is rich _________ oil.

A. by

B. to

C. at

D. in

Câu 5: He is retired. He lives________________ his pension.

A. by

B. on

C. with

D. to

Câu 6: I must try and look_____________ my notes before the exam.

A. through

B. up

C. for

D. after