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

A. cleared

B. purified

C. honored

D. respected

Câu 1: An interesting feature of this park is the Orphanage where lots of orphaned or abandoned animals are taken care of.

A. bad

B. ugly

C. weak

D. dull

Câu 2: The US troops are using much more sophisticated weapons in the Far East.

A. expensive

B. complicated

C. simple and easy to use

D. difficult to operate

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

A. stop

B. go on

C. follow

D. begin

Câu 4: He was so insubordinate that he lost his job within a week.

A. fresh

B. disobedient

C. obedient

D. understanding

Câu 5: 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 6: 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