单项选择题

The United States is composed of fifty states, two of ______ are separated from the others by land or water.

A．them
B．that
C．which
D．those
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单项选择题
They discussed the problem three or four times, but could come to no
A．end
B．conclusion
C．result
D．judgment
单项选择题
Let's go to the cinema tonight. I ______ for you at the gate.
A．wait
B．shall wait
C．am waiting
D．shall have waited
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