单项选择题

One must keep calm in ______ time of danger.

A．a
B．the
C．that
D．/
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单项选择题
What shall we use for power when all the oil in the world has ______
A．given out
B．put out
C．held up
D．used up
单项选择题
He didn't keep on asking me the time any longer as he had had his watch ______.
A．to repair
B．repaired
C．repairing
D．repair
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