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

A. at

B. in

C. on

D. to

Câu 1: She has suffered (from/to/with/about) her heart attack.

A. from

B. to

C. with

D. about

Câu 2: We are present (at/in/to/of) the lecture yesterday.

A. at

B. in

C. to

D. of

Câu 3: If you earn a good salary, you can be independent .......... your parents.

A. for

B. to

C. of

D. by

Câu 4: I'm not acquainted (at/in/with/of) those flowers.

A. at

B. in

C. with

D. of

Câu 5: He is negligent .......... his duties.

A. with

B. to

C. for

D. of

Câu 6: I'm interested (at/in/on/of) current events.

A. at

B. in

C. on

D. of