单项选择题

There is no point ______ about the poor working condition here.

A．in complaining
B．to complain
C．of complaining
D．complain
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单项选择题
You will find the matter ______ about all over the company.
A．being talked
B．talked
C．talking
D．to talk
单项选择题
His parents asked him to buy books ______ he found useful and necessary for his study.
A．whichever
B．whatever
C．whenever
D．however
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