是it only have one size.还是it have only one size?有语法错误吗?

是it only have one size.还是it have only one size?有语法错误吗? 是have only one 还是only have one? How about the size of the box?Oh,it is only ____this one. be one's size 是什么意思那么be是be动词吗?It's my size it takes only one day to have it laudry done 这句话后面有问题吗 have We have only one Earth.It is our commor() 这句话有语法错误吗?Only one heart,only one love或者Only one heart,only only have one chance We have only one You have only one You have one tear and only one tear to cry,so make it a good there have been only one China中文是什么意思,另外这句话有没有语法错误?