Câu hỏi: The earth is being threatened and the future looks bad.

A. done

B. made

C. protected

D. varied

Câu 1: Population growth rates vary among regions and even among countries within the same region.

A. fluctuate

B. stay unchanged

C. restrain

D. remain unstable

Câu 2: I have a modest little glass fish tank where I keep a variety of small fish.

A. moderate

B. limited

C. narrow

D. large

Câu 3: The doctor advised Peter to give up smoking.

A. stop

B. continue

C. finish

D. consider

Câu 4: They started building the house in January.

A. begin

B. finish

C. commence

D. continue

Câu 5: Certain courses are compulsory; others are optional.

A. voluntary

B. free

C. pressure

D. mandatory

Câu 6: He is writing a book on the representation of woman in medieval art.

A. men

B. female

C. girl

D. mother