单项选择题

I'm at my wits' end. Tell me to do.

A．how
B．what
C．when
D．why
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单项选择题
In the legal profession, men ______ women by five to one.
A．supersede
B．outnumber
C．outclass
D．overcome
单项选择题
All ______ is a continuous supply of raw materials.
A．what is needed
B．thing needed
C．that is needed
D．is needed
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