I borrowed several books from the library, ________ are about English study.
#66982
A
two of them
B
and two of which
C
two of which
D
two of what
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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
_________ is unknown to us all.
#70547
A
Where did he get it
B
Where he got it
C
That where he got
D
Which he got it