单项选择题

It was last night ______I saw the comet.

A．the time
B．when
C．that
D．which
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单项选择题
—Your phone number again I______ quite catch it. —It's 6956-8442.
A．didn't
B．couldn't
C．don't
D．can't
单项选择题
Mary______ a dress when she cut her finger.
A．made
B．is making
C．was making
D．makes
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