单项选择题

Because of the great speed of light, we see a lamp light up almost at the exact moment （）.

A. we turn it on
B. when we turn on it
C. that we turn on it
D. which we turn it on

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Mike’s uncle insists （） in this hotel.

A. staying not
B. not to stay
C. that he would not stay
D. that he not stay
单项选择题
I had no sooner closed the door （） somebody started knocking on it.

A. as
B. before
C. than
D. when
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