He proved that the earthround.
A. is
B. was
C. has been
D. had been
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He lets everyonethat he is a good doctor.
A. realize
B. to realize
C. realizing
D. realized
He was the sort of person you couldon.
A. take
B. depend
C. bring
D. put
High-speed trainsus time while allowing us to enjoy the scenery along the way.
A. kill
B. save
C. remove
D. waste
As long as you study something new every day, the life will be.
A. more good and more good
B. good and good
C. better and better
D. more and more good
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