It’s snowing heavily outside. Put on your coat,_________ ,you’ll catch a cold.
#55237
A
and
B
or
C
though
D
but
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Mr. Zhou was really anxious _____he can’t find his car. 
#55718
A
while
B
because
C
though
D
until
_______ the weather , the swimming match has been put off.
#58100
A
Because
B
Thanks to
C
Thanks for
D
With the help of
The police ____ still not sure ______ the young man killed himself or was killed.
#56977
A
is, if
B
is, whether
C
are , whether
D
are, that