单项选择题

The work they are doing is（）great value.

A．in
B．of
C．by
D．from

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单项选择题

I regret（）the novel to Jim because he made it very dirty.

A．to lend
B．having lent
C．to be lending
D．lent

单项选择题

Kevin is the only student in the class（）failed in the exam.

A．who
B．that
C．which
D．whom

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