It seems that this medicine has a good effect on the patient, ________he may die in great pain.
#77669
A
when
B
where
C
by which
D
without which
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Our neighbor offered to look after our baby yesterday when we were busy, _____is often the case.
#75738
A
it
B
that
C
which
D
as
In the cafeteria, I saw my sister and her three friends, none of ____ I had ever seen before.
#76784
A
them
B
which
C
whom
D
those