Câu hỏi: He formerly worked as a machinist_______ in Boeing's Everett assembly plant.

A. appriciate

B. apprentice

C. appraise

D. approach

Câu 1: He had a new heart valve _______.

A. added

B. supplanted

C. improved

D. implanted

Câu 2: The problem of_______ in big cities, which stems from uncontrolled migration from rural areas.

A. overpopulation

B. decrease

C. increase

D. growth

Câu 3: Gavin_______ the idea of dividing the rooms in half.

A. get on with

B. pave the way

C. keep an eye on

D. come up with

Câu 4: Some______ animals become tame if they get used to people.

A. wild

B. domestic

C. endangered

D. rare

Câu 5: The_______ of living here, of course, is that it is expensive.

A. glorious

B. athletic

C. strategy

D. downside

Câu 6: The _______ by UN troops prevented fighting from breaking out.

A. participant

B. intervention

C. joiner

D. contestant