Câu hỏi:

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

A. lively

B. frequented

C. accessible

D. revealed

Câu 1:

She was always very hard-working at school.

A. studious

B. learned

C. lazy

D. attentive

Câu 2:

Certain courses are compulsory; others are optional.

A. voluntary

B. free

C. pressure

D. mandatory

Câu 3:

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 4:

You did a beautiful thing in helping those poor children.

A. meaningful

B. good

C. terrible

D. positive

Câu 5:

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 6:

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

A. A. slow

B. open

C. unsure

D. uninterested