Câu hỏi: Plant and animal extinction leads _________ loss of biodiversity.

A. on

B. in

C. into

D. to

Câu 1: They held a party to congratulate _______ their son’s success to become an engineer.

A. on

B. in

C. to

D. up

Câu 2: She prefers carnations __________roses. In fact, she dislikes roses.

A. to

B. about

C. or

D. with

Câu 3: It is important to have someone that you can confide ________.

A. up

B. in

C. at

D. with

Câu 4: He worked hard ________ a mechanic for ten years before being appointed manager.

A. as

B. at

C. with

D. by

Câu 5: Not all books belong _________this class.

A. in

B. to

C. for

D. at

Câu 6: He didn’t even have the intelligence to call _________ an ambulance.

A. to

B. for

C. by

D. with