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单项选择题

They agreed to modify their policy.

A．clarify
B．change
C．define
D．develop
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热门试题

单项选择题The room is dim and quiet.

A．tiny
B．pleasant
C．dark
D．agreeable

单项选择题It's prudent to start any exercise program gradually at first.

A．workable
B．sensible
C．possible
D．feasible