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Work hard your dream will come true .
A．but B．and C．or D．so
Bill can swim, _______ he can’t sing.
A．but
B．and
C．or
D．so
We bought Granny a present________ she didn't like it.
Work hard, ___________ you’ll get good grades.
C．so
D．or
Don’t talk _____ drink in class.