请问Jast Do It

请问Jast Do It Jast是什么意思 请问"Do it yourself."可不可以写成"Yourself do it." jast one last jast fou you 请问It's better to do sth.和It's best to do sth.区别是什么 请问do it again 和do it once again有什么区别? 请问是It upset sb to do sth还是It upsets sb to do sth? 请问是 What to do it还是How to do it 歌词jast one last dance jast soso or bader 是什么意思? 请问Believe in myself and i can do it.