Look! The children are listening _____ their teacher carefully.
#49732
A
for
B
to
C
at
D
in
推荐题目
---How soon will you finish your college?---________.
#49722
A
After a year
B
In a year
C
Before a year
D
A year before
Keys _______ opening the lock in the door.
#47057
A
used for
B
are used
C
are used to
D
are used for