Câu hỏi: 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 1: They started building the house in January.

A. begin

B. finish

C. commence

D. continue

Câu 2: The doctor advised Peter to give up smoking.

A. stop

B. continue

C. finish

D. consider

Câu 3: Mr. Smith’s new neighbors appear to be very friendly.

A. amicable

B. inapplicable

C. hostile

D. futile

Câu 4: 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 5: His policies were beneficial to the economy as a whole.

A. harmless

B. crude

C. harmful

D. good

Câu 6: It must be difficult to cope with three small children and a job.

A. easy

B. free

C. confusing

D. tricky