Between the two periods of classes is a break,_____we can have a short rest.
#79676
A
then
B
where
C
when
D
Which
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He knew that cholera would never be controlled _____ its cause was found.
#32471
A
till
B
still
C
until
D
kill
You'd better not leave the medicine ________ kids can get at it.
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A
even if
B
which
C
where
D
so that
_____ private cars are bringing us convenience, they may also cause more traffic accidents and pollution.
#80556
A
While
B
As
C
If
D
Since
_____ news came ______ Dolly died of a terrible disease.
#31919
A
Disturbing, that
B
Disturbed; which
C
Disturbing; which
D
Disturbed; what