Câu hỏi: We are looking forward ....... seeing you again.

A. to

B. of

C. for

D. by

Câu 1: I'm very sorry ............. what I have done.

A. with

B. to

C. for

D. by

Câu 2: When are you leaving ......... Singapore? This week or next week?

A. for

B. in

C. to

D. at

Câu 3: We have to apply effective measures to save many plant and animal species ........ extinction.

A. from

B. in

C. for

D. on

Câu 4: This organization is quick ... sending relief goods to the flooded areas.

A. with

B. at

C. for

D. about

Câu 5: Clean air is necessary ........... our health.

A. to

B. for

C. on

D. with

Câu 6: Due to industrialization, we have to cope ... the fact that many  species are ......... danger ........ extinction.

A. over / at / for

B. at / upon / over

C. for / on / with

D. with / in / of