I want to use the same tools _______used in your factory a few days ago. 
#73759
A
as was
B
which was
C
as were
D
which
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It was quite a serious accident, ________caused by careless driving.
#74253
A
which I think was
B
I think which was
C
which I think it was
D
I think which it was
This is the least wonderful TV play ___.
#71695
A
what I have ever seen
B
I have ever seen
C
I have ever seen it
D
that I have ever seen it