Câu hỏi: 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 1: Plant and animal extinction leads _________ loss of biodiversity.

A. on

B. in

C. into

D. to

Câu 2: This organization is quick __________ sending relief goods to the flooded areas.

A. at

B. as

C. up

D. by

Câu 3: He worked hard ________ a mechanic for ten years before being appointed manager.

A. as

B. at

C. with

D. by

Câu 4: Mozart died ________ Vienna in 1791 _________ the age of 35.

A. in / on

B. in / at

C. at / in

D. of / for

Câu 5: Pay attention _______all traffic signs when you are travelling in the street.

A. for

B. on

C. to

D. from

Câu 6: What did that man die ________? –A heart attack.

A. by

B. of

C. with

D. to