Câu hỏi: As there was a power cut in the hospital, the surgeon had to _____ the operation.

A. call for

B. call on

C. call off

D. call out

Câu 1: The flat we have rented is very _______ for the underground station.

A. convenient

B. suitable

C. comfortable

D. distant

Câu 2: If your bicycle ______ comes off, it is almost impossible te put it back on without getting oil on your hands.

A. ring

B. belt

C. steel

D. chain

Câu 3: He’s not ______ of learning German in six months.

A. interested

B. inclined

C. able

D. capable

Câu 4: As we wait no longer for the delivery of your order, we have to ______ it.

A. postpone

B. refuse

C. return

D. cancel

Câu 5: Bill doesn’t _____ what people say about him.

A. care

B. matter

C. disturb

D. depend

Câu 6: Every day thousands of ______ fly the Atlantic for negotiations with American firms.

A. merchants

B. dealers

C. businessmen

D. tradesmen