It was quite a serious accident, _________ caused by careless driving.
#72048
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
单项选择（每题1分）_____ seems to be a possibility that we shall be able to afford the car we need.
#70335
A
It
B
That
C
There
D
This
_________ you may have, you should gather your courage to face the challenge.
#67618
A
Whatever serious a problem
B
However serious a problem
C
However a serious problem
D
No matter how a serious problem
It is immediately clear ____ the financial crisis will soon be over.
#74260
A
since
B
what
C
when
D
whether