单项选择题

Living in the central Australian desert has its problems, ______ obtaining water is not the least.

A．for which
B．to which
C．of which
D．in which
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You spent more money than ______ intended to be spent.
A．were
B．is
C．was
D．are
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A(n) ______ job is one that is long and boring.
A．dull
B．tedious
C．tiresome
D．monotonous
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