There are many children _____basketball on the playground.A.playingB.are playingC.to playD.play

问题描述:

There are many children _____basketball on the playground.
A.playing
B.are playing
C.to play
D.play

A.
球类前不加the。由are得是现在进行时。

A.playing
There be+名词+doing sth:正在做某事