单项选择题

We've just installed two air-conditioners in our apartment, ______ should make great differences in our life next summer.

A．which
B．what
C．that
D．they
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单项选择题
I only know the man by ______ but I have never spoken to him.
A．chance
B．heart
C．sight
D．experience
单项选择题
In order to raise money, Aunt Nicola had to ______ with some of her most treasured possessions.
A．divide
B．separate
C．part
D．abandon
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