Edison said, "Never give up, you will make it ".
A. yet
B. or
C. and
D. but
Lucy and Lily are twins. Lucy likes playing table tnnis, Lily doesn't .
A. or
B. but
C. and
D. yet
There is no airwater on tne moon .
A. and
B. or
C. so
D. yet
It's getting dark, they are still working.
A. and
B. but
C. so
D. or
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