单项选择题

The recorder ______ before it can be used.

A．needs repairing
B．requires repaired
C．should be in repair
D．has to be repairable
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单项选择题
Henry will not be able to attend the meeting tonight because ______.
A．he has taught a class
B．he will be teaching a class
C．he teaches a class
D．he will have been teaching a class
单项选择题
The ______ prosperous the city becomes, the ______ pleasant it is to live in.
A．most... fewer
B．more... fewer
C．more... less
D．most... less
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