单项选择题

( )he will come or not is unknown.

A．If
B．Whether
C．That
D．what
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单项选择题
Not a single word( )all morning.
A．did he say
B．he said
C．said he
D．does he say
单项选择题
It is said that he( )a murder.
A．committed
B．conducted
C．executed
D．emitted
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