Câu hỏi: 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 1: It isn’t quite ______ that he will be present at the meeting.

A. right

B. exact

C. certain

D. formal

Câu 2: As we wait no longer for the delivery of your order, we have to ______ it.

A. postpone

B. refuse

C. return

D. cancel

Câu 3: The country has a system of ______, most of which date from the nineteenth century.

A. channels

B. rivers

C. streams

D. canals

Câu 4:  The audience waited until the curtain had risen and then _____ into applause.

A. flooded

B. cheered

C. started

D. burst

Câu 5: How much would you ______ for repairing my watch?

A. charge

B. cost

C. spend

D. demand

Câu 6: The specialist was under so much stress that he finally ________.

A. broke off

B. broke down

C. broke out

D. broke in