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He has no brothers _____ sisters.
A.but
B.and
C.or
D./
Work hard your dream will come true .
A.but B.and C.or D.so
Bill can swim, _______ he can’t sing.
D.so
Work hard, ___________ you’ll get good grades.
C.so
D.or
Math is difficult interesting.
A.or B.and C.but