You should move back and forth while _______ basketball.
#50269
A
to play
B
playing
C
are playing
D
plays
推荐题目
Mr Li taught me     in the river when I was a child.
#49893
A
to swim
B
swam
C
swimming
D
swims
Teachers’ job is ______ the students learn well.
#50176
A
helping
B
help
C
to help
D
helped
 How much time did you spend ________ a bargain?    
#51388
A
look for
B
looking for
C
to look for
D
looked for