That day, we______ for the train station when Tom fell and hurt his legs badly.
#92441
A
have been leaving
B
were just about to leave
C
have left
D
are just going to leave
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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