_________ caused the accident is still a mystery.
#30978
A
How
B
What
C
That
D
Where
推荐题目
_______every member has arrived, let’s set about _____ the plan for the next five years.
#29940
A
Since; to work out
B
Because; work out
C
Now that; working out
D
For; work out
________ there is going to be a policy change ________ of those things is going to change.
#31861
A
Unless; few
B
Until; few
C
Unless; none
D
Until; none
Ellen was a painter of birds and of nature，________，for some reason，had withdrawn from all human society.(2012·浙江，17)
#30487
A
which
B
who
C
where
D
whom
One can’t do extreme sports _________ he or she has had some training.
#31217
A
if
B
unless
C
once
D
since
As the saying goes, practice makes perfect, ______is only by using English as often as possible can you learn English well.
#80346
A
which
B
as
C
that
D
this