单项选择题

Tom is one of the boys who ______ on time.

A．are
B．is
C．have
D．has
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单项选择题
A lot of people have tried，but（）have succeeded.

A．many
B．much
C．a few
D．few
单项选择题
I spoke to him ______ his low marks.
A．with regard
B．with regards to
C．with regard to
D．with regards
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