Câu hỏi: Some large cities may have to ban cars.... the city center to wipe out smoke.

A. of

B. from

C. to

D. with

Câu 1: The picture is .......... the wall.

A. above

B. at

C. over

D. on

Câu 2: She likes to go .......... a picnic.

A. for

B. on

C. for and on are correct

D. by

Câu 3: I work hard .......... help my family.

A. so as to

B. in order to

C. in order that

D. a and b

Câu 4: William is .......... meanness.

A. against

B. above

C. towards

D. according to

Câu 5: Did you go on holiday ... yourself?

A. by

B. on

C. to

D. of

Câu 6: I shall be ready .......... a moment.

A. for

B. in

C. with

D. on