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: You did a beautiful thing in helping those poor children.

A. meaningful

B. good

C. terrible

D. positive

Câu 2: His policies were beneficial to the economy as a whole.

A. harmless

B. crude

C. harmful

D. good

Câu 3: Using Facebook, you can post update sayings about your life every day.

A. locate

B. displace

C. establish

D. put up

Câu 4: We offer a speedy and secure service of transferring money in less than 24 hours.

A. uninterested 

B. unsure

C. open

D. slow

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: The whole conference was totally disorganized - nobody knew what they were supposed to be doing.

A. someone

B. nothing

C. no one

D. something