Keys _______ opening the lock in the door.
#47057
A
used for
B
are used
C
are used to
D
are used for
It’s nice ___________ the doctor to devote all the time he has _______ for the patients.
#47061
A
of; to care
B
for; to care
C
for; to caring
D
of; to caring
Lucy lived in Beijing ______2008 to 2012.
#47071
A
on
B
from
C
at
D
of
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