单项选择题

He ______ have been nervous because he didn’t go straight in.

A．ought to
B．must
C．should
D．had to
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单项选择题
This organization brought Western artists together in the hope of making more of an impact on the art community ______ any of them could individually and to promote Western art by women.
A．rather than
B．rather
C．than
D．other than
单项选择题
The students in the dormitories were forbidden, unless they had special passed, ______ after 11 pm.
A．staying out
B．stay out
C．from staying out
D．to stay out
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