单项选择题

Living in the desert of Africa 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
He didn't seem to mind（）TV while he was trying to finish his homework.

A．their watching
B．them watching
C．that they watch
D．them to watch
单项选择题
Most of her teachers and classmates believe that her politics（）. neither conservative nor liberal.

A．is
B．are
C．was
D．has been
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