单项选择题

It is said in the book that Thomas Edison(1847～1931)（）the world leading inventor for sixty years.

A. would be
B. has been
C. had been
D. was

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Since you are a little tired, you had better（）a rest.

A. to stop to have
B. stop to have
C. to stop having
D. stop having
单项选择题
--Why did you buy the car earlier --I（）Tom in Boston by car next month, but I've changed my mind.

A. visit
B. will visit
C. am going to visit
D. was going to visit
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