Исправьте ошибки 1)he knows the lesson more better than you 2)its nicely of you 3)i m awful sorry 4)he smiled at me friendly 5)the operation was more psinful i expected 6)she sings the best of all 7)is your sister elder than you?

1) He knows the lesson better than you. 2) It 's nice of you. 3) I'm awfully sorry. 4) здесь ошибки нет. если только нужна степень сравнения, тогда исправить слово friendlier. 5) The operation was more painful than I had expected. 6) She sings best of all. 7) здесь ошибок нет.