单项选择题

I don't think he ______ now.

A．must sleep
B．must be sleeping
C．can be sleeping
D．may sleep
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单项选择题
We must serve the people ______ Lei Feng did.
A．like
B．such
C．that
D．as
单项选择题
Colored cloth often ______ when it is washed.
A．faints
B．fades
C．lightens
D．weakens
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