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
---Would you go swimming with us? ---____, but I’m very busy now.
#94620
A
No problem
B
I’d like to
C
Of course
D
Sure
Jack, ______ to be here at 8 o’clock.
#95188
A
is sure
B
is sure that
C
will be sure
D
be sure
_______, follow the directiom on the bottle carefully.
#94182
A
Takes medicine
B
To take medicine
C
When one takes medicine
D
When taking medicine