Câu hỏi: They have been waiting ......... the bus for half an hour.

A. for

B. to

C. of

D. with

Câu 1: When she arrived in Britain, she wasn't used to driving ......... the left.

A. at

B. to

C. in

D. on

Câu 2: She treated me .......... Cake, ice-cream and tea.

A. with

B. for

C. to

D. by

Câu 3: Did you go on holiday ... yourself?

A. by

B. on

C. to

D. of

Câu 4: She smiled .......... him.

A. at

B. with

C. to

D. about

Câu 5: You don't like it, do you? ... the contrary, I love it.

A. on

B. in

C. of

D. for

Câu 6: I work hard .......... help my family.

A. so as to

B. in order to

C. in order that

D. a and b