Some people waste a lot of food___________ others don’t have enough to eat.
#56217
A
however
B
when
C
as
D
while
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This problem is ______ difficult __________.
#57835
A
so; that few of us can do
B
so; that few of us can do it
C
too; for anyone of us to do
D
too; for anyone of us to do it
My sister ______ go to bed _______ my mother came back last night.
#55654
A
not until
B
doesn't; until
C
didn't; until
D
aren't; until