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

A. at

B. in

C. on

D. to

Câu 1: Your words are contrary (to/in/on/of) your acts.

A. to

B. in

C. on

D. of

Câu 2: If you earn a good salary, you can be independent .......... your parents.

A. for

B. to

C. of

D. by

Câu 3: I shall wait .......... you.

A. about

B. by

C. to

D. for

Câu 4: Teachers are responsible (at/for/to/of) their teaching.

A. at

B. for

C. to

D. of

Câu 5: The air at the seaside is good (at/for/on/of) health.

A. at

B. for

C. on

D. of

Câu 6: Gas is made .......... coal.

A. of

B. from

C. with

D. to