Câu hỏi: Mary always take good care__________ her children.

A. off

B. of

C. by

D. with

Câu 1: Jane doesn’t spend much money ______ clothes.

A. over

B. about

C. at

D. on

Câu 2: She was very surprised ________ the grade she received.

A. at

B. on

C. of

D. about

Câu 3: A sign warned motorists ______ dangers.

A. of

B. for

C. about

D. a and c

Câu 4: It was very nice__________ him to give me a lift.

A. of

B. by

C. to

D. on

Câu 5: He wore a hat, which made him look _______________ a spy.

A. like

B. up

C. after

D. back

Câu 6: We congratulate you ___________ your successful flight.

A. on

B. about

C. by

D. with