Câu hỏi: We were very doubtful .............. his ability.

A. about

B. with

C. for

D. to

Câu 1: Clean air is necessary ........... our health.

A. to

B. for

C. on

D. with

Câu 2: This organization is quick ... sending relief goods to the flooded areas.

A. with

B. at

C. for

D. about

Câu 3: The roofs are covered ............. red tiles.

A. of

B. with

C. to

D. by

Câu 4: Henry was born ........ 1992.

A. on

B. in

C. at

D. of

Câu 5: What do you often do ............ the evening?

A. on

B. at

C. for

D. in

Câu 6: She has become very famous .......... her novels.

A. with

B. for

C. of

D. to