单项选择题

Most people make such mistakes ____ in their whole life.

A．some time
B．sometime
C．some times
D．sometimes
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单项选择题
The university ______ pressure to close its art department.
A．decided
B．made
C．resisted
D．adopted
单项选择题
Many thousands have benefited ______ the new medical system.
A．on
B．in
C．to
D．from
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