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He is tall, _____ his son is short.
#57153
A
when
B
or
C
while
D
and
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Which do you prefer to use to keep in touch with your friends，QQ__________MSN?
#56400
A
and
B
but
C
or
D
so
 He is young, __________ he knows a lot about Chinese geography.
#56944
A
but
B
and
C
so
D
or
Millie was watching TV ________ Andy came into the room.
#55749
A
while
B
when
C
as
D
if
—Mom, can I watch TV?—Yes, but you must do your homework _________ you can watch it.
#55399
A
before
B
after
C
because
D
or
She was ill,         she still went to work and tried her best to do the work.
#56466
A
though
B
because
C
if
D
but