单项选择题

Lincon looked as though he（）ill for a long time.

A．were
B．was
C．was been
D．had been

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单项选择题

（）a reply, he decided to write again.

A．Not receiving
B．Receiving not
C．Not having received
D．Having not received

单项选择题

（）we can't get the necessary financial support, what shall we do

A．Since
B．Supposing
C．As long as
D．In case

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