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

A. on

B. in

C. into

D. to

Câu 1: This organization is quick __________ sending relief goods to the flooded areas.

A. at

B. as

C. up

D. by

Câu 2: Not all books belong _________this class.

A. in

B. to

C. for

D. at

Câu 3: His father used the money he won to set_________ his own company.

A. down

B. up

C. at

D. in

Câu 4: Where is Jimmy? – He is ________ work. He is busy _________ his monthly report.

A. at/ with

B. at/ at

C. at/ to

D. on/ with

Câu 5: When you pick _________a book for the first time, check that it is not too difficult.

A. in

B. since

C. on

D. up

Câu 6: It is important to have someone that you can confide ________.

A. up

B. in

C. at

D. with