You should move back and forth while _______ basketball.
#50269
A
to play
B
playing
C
are playing
D
plays
推荐题目
I’d like a piece of paper____.
#50592
A
to write
B
to be writing
C
to write on
D
to write with
It takes about twelve minutes    and five minutes by bike.
#50116
A
walking
B
walk
C
to walk
D
walking
Can I stop ______ a rest, Sir?– Keep _______! The terminal (终点) is around the corner.
#50437
A
to have, running
B
having, running 
C
to have, to run
D
having, to run
We must stop the children from_____ with fire.
#49583
A
play
B
to play
C
playing
D
are playing