The city park will be cleaner ___________ people stop dropping litter here and there.
#56719
A
while
B
if
C
unless
D
before
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The girl sat in the corner quietly none of us noticed she was there.
#56898
A
such; that
B
too; to
C
so; that
D
very; that
The patients will have to wait all day ______ the doctor works faster.
#56848
A
if
B
unless
C
whether
D
that