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

A. appriciate

B. apprentice

C. appraise

D. approach

Câu 1: I_______ George on my way home.

A. dropped in on

B. gear up for

C. pair up with

D. look back on

Câu 2: The society was set up to______ endangered species from extinction.

A. prevent

B. distinguish

C. preserve

D. survive

Câu 3: Teachers complain that more of their time is taken up with _______than with teaching.

A. protection

B. administration

C. architecture

D. article

Câu 4: He had a new heart valve _______.

A. added

B. supplanted

C. improved

D. implanted

Câu 5: All the _______had excellent academic credentials.

A. candidates

B. goverments

C. followers

D. desigers

Câu 6: She finally achieved her_______ of visiting the USA.

A. target

B. objective

C. desires

D. ambition