Câu hỏi: Due to an increase in population and the use of nearby land for farming, there are toxic levels of chemicals in the water.

A. fall

B. lowness

C. shortage

D. illness

Câu 1: Toxic chemicals continue to be dumped in the North Sea.

A. stop

B. go on

C. follow

D. begin

Câu 2: When did Nguyen Hue defeat Thanh enemies?

A. peoples

B. animals 

C. friends

D. kids

Câu 3: The government is not prepared to tolerate this situation any longer.

A. look down on

B. put up with

C. take away from

D. give on to

Câu 4: In remote communities, it's important to replenish stocks before the winter sets in.

A. remake

B. empty

C. refill

D. repeat

Câu 5: His career in the illicit drug trade ended with the police raid this morning.

A. elicited

B. irregular

C. secret

D. legal

Câu 6: Rapid run-off would cause frequent floods and leave little water during fry seasons.

A. sometimes

B. unusual

C. irregular

D. little