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

A. about

B. in

C. on

D. of

Câu 1: English belongs (from/to/on/in) those who use it.

A. from

B. to

C. on

D. in

Câu 2: He is negligent .......... his duties.

A. with

B. to

C. for

D. of

Câu 3: We are grateful (at/in/on/to) our teacher.

A. at

B. in

C. on

D. to

Câu 4: The car went .......... full speed.

A. with

B. for

C. to

D. at

Câu 5: I'm not acquainted (at/in/with/of) those flowers.

A. at

B. in

C. with

D. of

Câu 6: The air at the seaside is good (at/for/on/of) health.

A. at

B. for

C. on

D. of