题目内容

I pressed the wrong button and the machine ____________.

A. broke down
B. broke up
C. broke out
D. broke into

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_________, the workers helped me fix the machine.

A. Lucky
B. Unlucky
C. Luckily
D. Unluckily

She _________ the wrong button last time.

A. doesn’t press
B. don’t press
C. didn’t press
D. hasn’t pressed

There are ________ things to do.

A. the number of
B. a number of
C. numbers of
D. number

Would you show me __________ the printer.

A. use
B. using
C. what to use
D. how to use

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