It was quite a serious mistake, ____caused by carelessness. 
#73080
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
He has _____ that sometimes he can’t see an inch ahead.
#68060
A
so poor eyesight
B
such poor eyesight
C
such a poor eyesight
D
so poor an eyesight
_____, we decided to spend the night at the foot of the mountain.
#68372
A
With the moon appeared
B
The moon appeared
C
The moon being appeared
D
As the moon appeared
Do you know the reason _______ he was late?
#68681
A
that
B
which
C
where
D
why