___________ caused the accident is still a complete mystery.
#73942
A
What
B
That
C
How
D
Where
推荐题目
we can not figure out ____quit a number of insects ,birds ,and animals are dying out .
#73069
A
that
B
as
C
why
D
when
My neigh bours used to give me a hand in time of trouble, _______ was very kind of them.
#73830
A
who
B
which
C
that
D
it
The road conditions there turned out to be very good, ___ was more than we could expect.
#71771
A
it
B
what
C
which
D
that
（2014年福州市高三适应性练习）24. Reputation is a treasure that, once _______, can never be won back.
#66654
A
losing
B
being lost
C
lost
D
having lost