I often play basketball （ ）the weekends.用at 还是on?

I often play basketball （ ）the weekends.用at 还是on? They often play basketball on the weekends.画线部分提问 Sometimes I play basketball on the weekends对sometimes提问 I often play basketball on the basketball court after class. we often play basketball on weekends改为一般疑问句 I can play basketball only on weekends 同义句I （ ）（ ）play baske I can play basketball only on weekends 同义句I （ ）play basketba at weekends ,i often stat________ home用at还是from they always play basketball ( ) the playground.用in还是on还是at呀, I can play basketball only on weekends.改为同义句 sometimes l play basketball on the weekends.【对sometimes提问】[ I often surf the I___ on weekends.