We went to Mountain Tai last weekend, ________, not surprisingly, was crowded with visitors.
#4977
A
that
B
which
C
where
D
when
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Edward, you play so well. But I ______ you played the piano. 
#5038
A
didn’t know
B
hadn’t known
C
don’t know
D
haven’t known
He threw away all the ______ cigarettes, _______ to give up smoking for the sake of his health.
#4651
A
remained; determining
B
leaving; determined
C
remaining; determined
D
left; determining