It takes us about an hour ________ our homework every day.
#57246
A
do
B
doing
C
to do
D
did
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Mr Yu gave some new words to Lucy and asked her to     on the blackboard.
#62363
A
write it down
B
write them down
C
write down it
D
write down them
The key ____ for opening the door of the room.
#60152
A
uses
B
is using
C
is used
D
used