Convenient ___private cars are for us, they may also cause traffic accidents and pollution.
#33185
A
while
B
as
C
if
D
since
推荐题目
While many believe Benjamin Franklin to have discovered electricity, recent findings seem to show _____.
#80228
A
anyway
B
otherwise
C
somehow
D
so
An independent traveler would like to struggle with maps and signs ____ he finds the way．
#31222
A
since
B
until
C
before
D
when
You may use the room as you like you clean it up afterwards.
#31417
A
so far as
B
so long as
C
in case
D
even if