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

A. stop

B. go on

C. follow

D. begin

Câu 1: Rapid run-off would cause frequent floods and leave little water during fry seasons.

A. sometimes

B. unusual

C. irregular

D. little

Câu 2: This national park is special because it has plants and animals from both tropical and temperate zones.

A. warm

B. pole

C. cool

D. wet

Câu 3: The minister came under fire for his rash decision to close the factory.

A. was dismissed

B. was acclaimed

C. was criticized

D. was penalized

Câu 4: He revealed his intentions of leaving the company to the manager during the office dinner party.

A. disclosed

B. concealed

C. misled

D. influenced

Câu 5: We cannot clean up our polluted rivers and seas overnight.

A. cleared

B. purified

C. honored

D. respected

Câu 6: There has been no discernible improvement in the noise levels since lorries were banned.

A. clear

B. obvious

C. thin

D. insignificant