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:

The earth is being threatened and the future looks bad.

A. done

B. made

C. protected

D. varied

Câu 2:

We ought to keep these proposals secret from the chairman for the time being.

A. lively

B. frequented

C. accessible

D. revealed

Câu 3:

Certain courses are compulsory; others are optional.

A. voluntary

B. free

C. pressure

D. mandatory

Câu 4:

I've put the cake on a high shelf where he can't get at it.

A. low

B. untouchable

C. far

D. difficult to reach

Câu 5:

We offer a speedy and secure service of transferring money in less than 24 hours.

A. A. slow

B. open

C. unsure

D. uninterested

Câu 6:

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

A. men

B. female

C. girl

D. mother