Câu hỏi: When are you leaving __________ Singapore? This week or next week?

A. for

B. to

C. from

D. of

Câu 1: Do you know anyone who might be interested _________buying an old car?

A. on

B. in

C. with

D. about

Câu 2: Governments have enacted laws to protect wildlife ________commercial trade and overhunting.

A. from

B. without

C. for

D. at

Câu 3: 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 4: Toxic chemicals in the air and land have also driven many species ______ the verge of extinction.

A. of

B. about

C. at

D. to

Câu 5: This organization is quick __________ sending relief goods to the flooded areas.

A. at

B. as

C. up

D. by

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

A. by

B. of

C. with

D. to