They often play_____football after school.（填a,an或/）

They often play_____football after school.（填a,an或/）
They often play_____football after school.（填a,an或/）

They often play_____football after school.（填a,an或/）
/（不填)

不填。

~~~ 我答题，我快乐！~~~

/
球类之前是不加冠词的，但是乐器加the
play the piano.

填/

/
对于球类运动，不加冠词。
希望帮到你！

填/，球类如play basketball,play tennis都不用冠词

不填
play +球类 play the 乐器名称
play football ，play basketball
play the vilon，play the piano