________ private cars are bringing us convenience, they may also cause more traffic accidents and pollution.
#32291
A
While
B
As
C
If
D
Since
推荐题目
It may be 5 or 10 years __________ it is possible for people to find a space station on the moon.
#30830
A
since
B
before
C
after
D
when
The most favorite room is the tidy study with a fireplace, _____we can watch TV and enjoy the nice scenery outside.
#80300
A
where
B
when
C
that
D
which
What the doctors really doubt is my lather will reeover from me serious disease soon.
#30620
A
whether
B
when
C
why
D
how