单项选择题

It's no use ______ a lot of books without reading them.

A. to buy
B. buy
C. buying
D. bought
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单项选择题
It is well known that Thomas Edison ______ the electric lamp.
A. invented
B. discovered
C. found
D. developed
单项选择题
All the students in this class passed the English exam ______ the exception of Wang Ming.
A. on
B. in
C. for
D. with
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