—What is the most important for us to learn well as students?—I think your teacher should ________ carefully in class?
#53498
A
be listened
B
listen to
C
be listening to
D
be listened to
推荐题目
 We _____ in this pool when we were young, but now it _____ fish. 
#59147
A
are used to swim; used to keep
B
are used to swimming; used to keep
C
used to swimming; is used to keep
D
used to swim; is used for keeping