I am going visit my grandparents tomorrow 哪错了,怎么改还有Thank you for (clean的适当形式）the room for me.They can't (play的适当形式) the computer games.这两句（ ）里填什么形式?

I am going visit my grandparents tomorrow 少了一个to
I am going to visit my grandparents tomorrow
Thank you for cleanning (clean的适当形式）the room for me.
They can't play(play的适当形式) the computer games.
欢迎追问哦

I am going to visit my grandparents tomorrow be going to do表示即将做某事
cleaning 介词后用动名词
play 情态动词后用原形

going to或者 am visiting.
cleaning
play

还有Thank you for (cleaning）the room for me.
They can't (play) the computer games.
I am going visit my grandparents tomorrow应该是
I am going （to）visit my grandparents tomorrow
语法不够扎实，希望好好学习