The accident happened _____ a cold winter morning.
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A
on
B
in
C
at
D
of
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Keys _______ opening the lock in the door.
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A
used for
B
are used
C
are used to
D
are used for
 This one-hour documentary is on Golden TV _____7.30 p.m. ______ 8.30 p.m.
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A
from, and
B
between, to
C
between, and
D
from, between