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: Soon after it was born, the calf got up and tried to stand on its shaky legs.

A. appeared

B. died

C. joined

D. celebrated

Câu 3: I’d like to pay some money into my bank account.

A. withdraw some money from

B. put some money into

C. give some money out

D. leave some money aside

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

A. harmless

B. crude

C. harmful

D. good

Câu 5: She went to live in another state after the break-up of her marriage.

A. loneliness

B. anniversary

C. celebrity

D. divorce

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