Alice, you’d better put the vase away ________ it gets broken.
#31323
A
when
B
before
C
unless
D
while
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Nowadays, many young people have no idea how to get to_____they want to go.
#34259
A
which
B
Where
C
the place which
D
there
—Why didn’t you tell him about the meeting?—He rushed out of the room _____ I could say a word.
#79828
A
before
B
until
C
when
D
after
It hasn't been made clear ________ the new underground line is to be open to traffic.
#30335
A
when
B
that
C
what
D
where