单项选择题

My neighbor ______ the piano; he usually practices at about this time.

A．used to practice
B．would practice
C．is practicing
D．practiced
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单项选择题
Mr. Grace ran all the way up to the lecture room only ______ that the lecture was over 15 minutes ago.
A．to find
B．finding
C．found
D．finds
单项选择题
______ information, it can also store the information as fast as it is gathered.
A．Not only an electronic computer can gather
B．Not only can gather an electronic computer
C．Not only can an electronic computer gather
D．Not only gather an electronic computer
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