The couple decided to adopt the child whose parents ________in an accident.
#100975
A
had been killed
B
are killed
C
had killed
D
killed
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These days, we _____ for our final exams.
#102111
A
are prepared
B
have prepared
C
are preparing
D
will prepare
I would have come earlier, but I ________ that you were waiting for me. 
#102416
A
hadn’t known
B
didn’t know
C
would have known
D
haven’t know