单项选择题

______ there is little we can do to modify the weather, we can at least know what kind of weather to expect.

A．Since
B．When
C．While
D．Unless
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It’s not fair that you come home after a bad day at work and ______ your wife and children.
A．take it out on
B．take out it on
C．take out on
D．take on it with
单项选择题
The prince is ______ to the throne.
A．benefactor
B．hell
C．heir
D．heiress
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