单项选择题

The next moment, ______ she had time to realize what was happening, she was hit over the head.

A．when
B．before
C．since
D．as
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单项选择题
Without the worker's help, Sam ______ so much progress.
A．would not make
B．would not have made
C．will not make
D．did not make
单项选择题
Where did you get your watch ______
A．repair
B．to repair
C．repaired
D．repairing
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