单项选择题

I don't know ______ we can finish the work on time.

A． that
B． if
C． when
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单项选择题
Zhang Hua has just received a new watch from his aunt. She looks very ______
A． happiness
B． happy
C． happily
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We were given a week to get ______ for the trip.
A． preparing
B． ready
C． done
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