单项选择题

Living in the northern part of the country has its problems, ______ obtaining fresh water is not the least.

A．with which
B．for which
C．of which
D．which
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单项选择题
We can hear ______ from the back of the room.
A．just as well
B．just as easy
C．just as good
D．easily as well
单项选择题
Joseph was very lucky ______ with his wife; he almost did not get out of the room.
A．to escape
B．to have escaped
C．to escaping
D．to be escaping
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