In case of fire, stay low to the ground in a smoky room, ________ smoke always rises towards the ceiling.
#30873
A
as
B
when
C
while
D
once
推荐题目
________ good use you have made of your time to work, there is still some room for improvement.
#33762
A
Whatever
B
However
C
Though
D
Whether
Barack Obama delivered a speech to 500 local youths during his visit to China, many of _______ were from Fudan University and Tongji University.
#34128
A
them
B
whom
C
which
D
those
Before the meeting, Jack went over the report again ______ a mistake might occur.
#31902
A
while
B
in case
C
so that
D
even if
______ you are a college student，you should learn to be independent of your parents’ help.
#30729
A
Now that
B
While
C
Unless
D
Even though
We need some more facts and figures __________ we take the final decision.
#31598
A
since
B
before
C
after
D
until