Mr. Zhou was really anxious _____he can’t find his car.
#55718
A
while
B
because
C
though
D
until
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—Mum, what’s the time now?—It’s already half past seven. Be quick,_____ you will be late.
#57058
A
if
B
or
C
and
D
until
Some people waste a lot of food___________ others don’t have enough to eat.
#56217
A
however
B
when
C
as
D
while