单项选择题

The book gives a brief _______ of the course of his research up till now.

A．outline
B．reference
C．frame
D．outlook
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单项选择题
I couldn't sleep last night because the tap in the bathroom was ________.
A．draining
B．dropping
C．spilling
D．dripping
单项选择题
Jimmy earns his living by _______works of art in the museum.
A．recovering
B．restoring
C．renewing
D．reviving
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