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: Did you go on holiday ... yourself?

A. by

B. on

C. to

D. of

Câu 2: You don't like it, do you? ... the contrary, I love it.

A. on

B. in

C. of

D. for

Câu 3: She smiled .......... him.

A. at

B. with

C. to

D. about

Câu 4: Mr. Johnson said he was ......... favor of doing the work right away.

A. to

B. in

C. above

D. of

Câu 5: I work hard .......... help my family.

A. so as to

B. in order to

C. in order that

D. a and b

Câu 6: When she arrived in Britain, she wasn't used to driving ......... the left.

A. at

B. to

C. in

D. on