All you need to do is (to) fill in this form.中to为什么可有可无?是什么语法现象?

I need to know what do you want for all? 歌词中有all i all i ever want to all i ever need you... 歌词中含有“ all i all i ever want to all i ever need you is.” 英语翻译 I need to do it for you to see, And with you I do not need to care about And with you I do not need to care about Whatever you do,wherever you are ,that don't need to care for me,cause I already missed you after all. I need you right here with me girl all i wanna do i do it for you 都很好,呵呵 1,I also want to travel all over the world.2,As long as you are good ,you do not need a lot of them. 连词成句:is,all ,need,to,more,practice,you,do,to I need you ,but i don't want to hurt you ,do you know It isn't difficult to lose weight. All you need to do is go on a diet. ```It isn't difficult to lose weight.All you need to do is go on a diet.I've already had all the food on my diet today.三句话的翻译.第一句的to起了什么作用.是什 I think,all you need ------ is to prepare some words for it.A.to do B.doing C.does2.I have -----my mom to do some washingA.for help B.to help c.in helping i think you need to get more exercise意思和i think you need to do some sports相同吗? Do you know who they’re ________ about the accident at the school gate?A.talking B.saying C.telling D.speaking .I think __________ is enough food to eat during the winter.A.they all need B.they need all C.all of their need D.all they need what i need to do what need i do? 1.would you like to do改同义句 2.I need to do改否定 do all what I will tell you to do如何修改能否改成do all that I will tell you