Câu hỏi: Are you acquainted ___________ this man?

A. with

B. to

C. by

D. on

Câu 1: They cancelled the flight because _________________ the storm.

A. with

B. by

C. off

D. of

Câu 2: He was accused _____________ having stolen a car.

A. for

B. to

C. of 

D. by

Câu 3: Have you washed your hands______________ having lunch?

A. before

B. after

C. during

D. for

Câu 4: Why were you absent ____________ class this morning?

A. for

B. with

C. by

D. from

Câu 5: On behalf_____________ our group, he made a speech at the meeting.

A. of

B. to

C. in

D. by

Câu 6: In English lessons we always speak ___________ English.

A. by

B. in

C. to

D. with