单项选择题

He tried ______ a new microphone and was able to make himself heard.

A. to use
B. to be used
C. to using
D. using
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单项选择题
The washing machine ______ before it can be used.
A. must repair
B. needs repairing
C. should be in repair
D. require be repaired
单项选择题
My son’s hair is too long; it wants. I’ll have it ______ tomorrow.
A. cutting...done
B. cutting...to be done
C. being cut...done
D. to be cut...to be done
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