It was quite a serious accident, _____ caused by careless driving.
#72311
A
which I think was
B
I think which was
C
which I think it was
D
I think which it was
推荐题目
The clock was striking twelve ______ down the street. 
#74557
A
because I walked
B
as I walked
C
since I was walking
D
while I was walking
I shall remember the days __ we worked together.
#71598
A
when
B
which
C
that
D
of which
 ____ it happens, her birthday is after mine.
#71960
A
As
B
While
C
Though
D
Until