Câu hỏi: On behalf_____________ our group, he made a speech at the meeting.

A. of

B. to

C. in

D. by

Câu 1: Thank you very much____________ inviting me to your party.

A. on

B. by

C. to

D. for

Câu 2: Why were you absent ____________ class this morning?

A. for

B. with

C. by

D. from

Câu 3: Have you washed your hands______________ having lunch?

A. before

B. after

C. during

D. for

Câu 4: This area is rich _________ oil.

A. by

B. to

C. at

D. in

Câu 5: He was accused _____________ having stolen a car.

A. for

B. to

C. of 

D. by

Câu 6: When I bought the house, my sister helped me_________ with a loan.

A. out

B. in

C. by

D. to