Câu hỏi: Population growth rates vary among regions and even among countries within the same region.

A. restrain

B. stay unchanged

C. remain unstable

D. fluctuate

Câu 1: Her thoughtless comments made him very angry.

A. honest

B. kind

C. pleasant

D. thoughtful

Câu 2: My cousin tends to look on the bright side in any circumstance.

A. be optimistic

B. be pessimistic

C. be confident

D. be smart

Câu 3: My mom is always bad-tempered when I leave my room untidy.

A. feeling embarrassed

B. talking too much

C. very happy

D. easily annoyed

Câu 4: In some countries, the disease burden could be prevented through environmental improvements.

A. something to stiffer

B. something enjoyable

C. something sad

D. something to entertain

Câu 5: He is over the moon about his examination result.

A. stressed

B. very sad

C. very happy

D. satisfied

Câu 6: Her father likes the head cabbage rare.

A. over-boiled

B. precious

C. scarce

D. scare