单项选择题

In order not to be disturbed, I spent three hours ______ in my study.

A．locking
B．locked
C．to lock
D．being locked
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单项选择题
Is that a book on farming If so, I want to borrow ______.
A．this
B．one
C．it
D．the one
单项选择题
--Dose Tom do his new job well -- ______ his old job. How stupid! I think there is no hope for him.
A．No better than
B．Not better than
C．Not so well as
D．No as well as
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