单项选择题

______ an answer, he decided to write another letter to them.

A．Receiving
B．Not being received
C．Having not received
D．Not having received
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单项选择题
The students spent considerably ______ time listening to English than speaking it.
A．more
B．much
C．many
D．a great deal of
单项选择题
The old lady cannot ______ herself ______ the idea that somebody is following her all the time.
A．free ... with
B．free ...of
C．free ... out
D．free ... away
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