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单项选择题


A．showed
B．told
C．tended
D．discovered
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热门试题

单项选择题A．ought toB．mayC．mustD．have to

A．ought to
B．may
C．must
D．have to

单项选择题A．go back toB．go on withC．go over and overD．stand by

A．go back to
B．go on with
C．go over and over
D．stand by