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

A. cleared

B. purified

C. honored

D. respected

Câu 1: He was so insubordinate that he lost his job within a week.

A. fresh

B. disobedient

C. obedient

D. understanding

Câu 2: Rapid run-off would cause frequent floods and leave little water during fry seasons.

A. Bad

B. Weak

C. Slow

D. Ugly

Câu 3: Toxic chemicals continue to be dumped in the North Sea.

A. stop

B. go on

C. follow

D. begin

Câu 4: There is growing concern about the way man has destroyed the environment.

A. ease

B. attraction

C. consideration

D. speculation

Câu 5: Most of the guests at the dinner party chose to dress elegantly, but one man wore jeans and a T-shirt, he was later identified as a high school teacher.

A. unsophisticatedly

B. decently

C. gaudily

D. gracefully

Câu 6: Fruit and vegetables grew in abundance on the island. The islanders even exported the surplus.

A. large quantity

B. small quantity

C. excess

D. sufficiency