Our music teacher is always heard _______ in the music room.
#50599
A
sing
B
sang
C
singing
D
to sing
推荐题目
I don’t have a friend _____.
#49430
A
to talk
B
talking to
C
to practice English
D
to chat with
 Since you are tired, you’ d better        and have a good rest.
#48426
A
to stop to study
B
stop to study
C
stop studying
D
to stop studying
What about _____ for a walk after dinner? 
#50582
A
go
B
goes
C
went
D
going