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He took medicine 3 times a day,________ didn't work.
#67231
A
it
B
but
C
which
D
but which
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—Well, I do think the iPod is a smart, convenient and intelligent. —________.
#73739
A
So it is
B
So is it
C
So does it
D
So it does
There were some chairs left over _____ everyone had sat down.
#74422
A
when
B
until
C
that
D
where
 Without facts , a person can’t form a correct opinion , for he needs to have actual knowledge _____ his thinking .
#72414
A
which to be based on
B
on which to base
C
which to be based
D
which to base
With his work completed, the businessman stepped back to his seat, feeling pleased_____ he was a man of action.
#73887
A
which
B
that
C
what
D
whether
There are some warnings in some countries ______ over exploitation of underground water has caused the decline of wetland and increase of desertification.
#67588
A
which
B
where
C
what
D
that