单项选择题

I shall make the announcement ______ the beginning of the meeting.

A．to
B．for
C．at
D．in
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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
单项选择题
He is ______ a horse.
A．stronger as
B．as stronger than
C．the strong as
D．stronger than
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