It was a serious mistake, ______ caused by carelessness. 
#93814
A
which I think was
B
which I think it was
C
I think which was
D
that I think it was
推荐题目
There are three times __________.
#93606
A
as many girls as boys
B
as many girl as boy
C
as many girls as boy
D
as many girl as boys
 Jack, I’m afraid I’ll turn to you.I think chemistry is _______ physics.
#93554
A
as a difficult subject as
B
a subject the same difficult as
C
as difficult a subject as
D
the same difficult subject as