单项选择题

In no way ______ from practice.

A．theory can be separated
B．theory is separated
C．can theory be separated
D．has theory been separated
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单项选择题
We must ______ early in the morning so as to catch the first train.
A．set up
B．set out
C．set about
D．set aside
单项选择题
It is a question ______ the book will be published this month or next month.
A．if
B．whether
C．that
D．which
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