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Why not look up the new word in a dictionary _____ you don’t know it ?
#80663
A
if
B
that
C
though
D
whether
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I have only one day left ___ traveling to Kunming and then flying back home. 
#31012
A
when
B
as
C
before
D
while
As the sea ice melts sooner each swimmer,polar bears are forced to come ashore earlier and face food shortages _____ they have stored enough fat to last them through the season.
#31875
A
before
B
unless
C
since
D
until
I borrow the book Sherlock Holmes from the library last week, ______ my classmates recommended to me..
#30015
A
who
B
which
C
when
D
Where
The two men talked in a low voice, ____nobody heard what they were saying.
#31699
A
so that
B
as if
C
because
D
when
 There were dirty marks on her trousers _______ she had wiped her hands.
#31676
A
when
B
which
C
where
D
That
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