The hospital is new _____ very dirty.
#57557
A
and
B
or
C
so
D
but
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Many people believe we will face environmental disasters _________ we completely change the way we live.
#57124
A
but
B
though
C
unless
D
until
Some people won’t realize the importance of their health _____they have lost it.
#56772
A
after
B
when
C
until
D
as