Câu hỏi: I take my hat off to all those people who worked hard to get the contract.

A. congratulate

B. unrespect

C. welcome

D. encourage

Câu 1: Slavery was abolished in the US in the 19th century.

A. instituted

B. eradicated 

C. eliminated

D. required

Câu 2: Nutritionists believe that vitamins circumvent diseases.

A. defeat

B. nourish

C. help

D. treat

Câu 3: He was so insubordinate that he losst his job within a week.

A. fresh

B. disobedient

C. understanding

D. obedient

Câu 4: The couple tried to converse in the busy restaurant, but they couldn't hear themselves speak so they went elsewhere.

A. talk

B. stop talking

C. chat

D. communicate

Câu 5: About 95% of all animals are invertebrates which can live anywhere, but most, like the dtarfish and crab, live in the ocean.

A. with backbones

B. with ribs

C. without ribs

D. without backbones

Câu 6: Her father likes the head cabbage rare.

A. scare

B. precious

C. scarce

D. over-boiled