单项选择题

This page need ______ again.

A．being checked
B．checked
C．to check
D．to be checked
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单项选择题
______ his telephone number, she had some difficulty getting in touch with Bill.
A．Not knowing
B．Knowing not
C．Not having known
D．Having not known
单项选择题
We grow all our fruit and vegetables, ______ saves money.
A．what
B．which
C．as
D．that
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