单项选择题

Medical research has shown that the widespread of use of cigarettes contributes（）the increase of cancers.

A．to wards
B．for
C．with
D．to

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单项选择题
It is not unusual for workers in that region（）

A．to be paid more than a month late
B．to be paid later than more a month
C．to pay later than a month more
D．to pay late more than a month
单项选择题
He is mentioned in the chapter and also in（）that proceeds.

A．the one
B．it
C．which
D．what
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