I am very tired why you be total I let sad

I am very tired why you be total I let sad i am very sad I do not know why I am very sad Do you know?I am sad!very sad! I am tired,may you be happy I am very tired Please let me rest the moment Don't let me sad,don't let me sorrow,I am tired .Leaving is Don't let me sad,don't let me sorrow,I am tired 的中文意思 now i am very sad Today,I am very sad! I AM VERY VERY WERY TIRED If I should disappear,should you be very sad?