some boys are playing the football on the playground.修改病句

问题描述:

some boys are playing the football on the playground.修改病句
Do your sister waiting for me?
I have two pens.one is black,other is red.
some students are looking the building at the moment.
3Q

1.去掉 football 前面的the
2.Do 改为Are
3.other 改为 the other
4.looking 改为 looking for 或者looking at 再问一下 Everyone are having dinner now. 谢啦are改为 iseveryone 作主语,是单数