单项选择题

______ I call you or not, you can wait at the gate at five this afternoon.

A. If
B. What
C. Whether
D. However
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We expressed the hope ______ they would come and visit China again.
A. that
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All of my schoolmates went to see the film. I didn't like it at all. In fact, ______ of us did.
A. either
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