单项选择题

He said that there was nothing to be ______.

A．ashamed
B．ashamed in
C．ashamed of
D．ashamed at
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单项选择题
If you ______ that night, you might have been too late to get your ticket.
A．didn't hurry
B．hadn't hurried
C．wouldn't hurry
D．hadn't to hurry
单项选择题
The rough draft of any research report should be edited to ______ that all data are correctly presented, that all equipments are listed, that all results are properly de-tailed.
A．ensure
B．assure
C．secure
D．insure
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