As ______along the river bank, she was singing a pop song.
#96170
A
walking
B
walked
C
to walk
D
walk
推荐题目
At the beginning of class, the noise of desks _____ could be heard outside the classroom. 
#98029
A
opened and closed
B
to be opened and closed
C
being opened and closed
D
to open and close
What’s the chance of ________ a general election this year?
#90576
A
there being
B
there to be
C
there be
D
there going to be