单项选择题

The TV set（）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
It is recommended that the project（）until all the preparations have been made.

A．alter
B．convert
C．is not started
D．not be started
单项选择题
It was not until the accident happened（）

A．when I realized my carelessness
B．as I realized my carelessness
C．that I realized my carelessness
D．when my carelessness has been realized
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