All that we have to do is to practise everyday.能否将that改为what

All that we have to do is to practise everyday.能否将that改为what
All that we have to do is to practise everyday.能否将that改为what

All that we have to do is to practise everyday.能否将that改为what
不能,因为that引导的是定语从句修饰all,what不能引导定语从句

不行啊，非要用what 的话就只能是What we have to do is to practise everyday

不能
that we have to do是定语从句，修饰All，that是定语从句的关系代词，不可换

不能
that代词 是指 (已被提到的)那个,那人,那事,那东西
what (用作关系代词)所...的事物(或人)