The dancers, all of _______ masks came off suddenly, gave us a great surprise. 
#32153
A
their
B
whose
C
which
D
whom
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____ to America, her parents have not heard from her.
#79879
A
Because she went
B
After she went
C
When she went
D
Since she went
.I was about to leave_________I saw him_______ towards me, with a bag in hand.
#34281
A
while; running
B
when; running
C
as; ran
D
when; to run