Câu hỏi: We are grateful (at/in/on/to) our teacher.

A. at

B. in

C. on

D. to

Câu 1: A bird .......... the hand is worth two .......... the bush.

A. on - on

B. on - in

C. in - in

D. in - on

Câu 2: Four-fifths of the world's computers use programs (at/in/on/about) English.

A. at

B. in

C. on

D. about

Câu 3: We are proud (at /in/on/of) our people's heroic tradition.

A. at

B. in

C. on

D. of

Câu 4: I shall wait .......... you.

A. about

B. by

C. to

D. for

Câu 5: He is sad (about/in/on/of) his son’s laziness.

A. about

B. in

C. on

D. of

Câu 6: The car went .......... full speed.

A. with

B. for

C. to

D. at