单项选择题

The United States is composed of 50 states , two of which are separated from ______ by land or water.

A．others
B．other one
C．the others
D．another
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单项选择题
Two hours ______ the limit of this test.
A．are
B．has been
C．have been
D．is
单项选择题
I couldn't find ______ ,and so I took this one.
A．a large enough coat
B．a large coat enough
C．an enough large coat
D．a coat enough large
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