Câu hỏi: Don't you think you should try to be friendly ... your classmates?

A. to

B. of

C. with

D. by

Câu 1: The roofs are covered ............. red tiles.

A. of

B. with

C. to

D. by

Câu 2: Clearing forests for timber has resulted ....... the loss of biodiversity.

A. with

B. at

C. in

D. for

Câu 3: We were very doubtful .............. his ability.

A. about

B. with

C. for

D. to

Câu 4: We are looking forward ....... seeing you again.

A. to

B. of

C. for

D. by

Câu 5: We have to apply effective measures to save many plant and animal species ........ extinction.

A. from

B. in

C. for

D. on

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