补全对话。 Grandma: You look sad, Nancy! 6______ Nancy: I don't know, Grandma.I am tired and feel like doing nothing. Grandma: Are you ill? Nancy: I'm not sure.7______ Grandma: Why don't you want to go to school? Nancy: I had an exam last week,but I failed it. Grandma: 8______ you have w orked hard I know.You were just unlucky. And one exam doesn't mean all. Nancy: But I'm afraid mum and dad will____9______ me. Grandma: They won't. All you should do is to keep on working hard. Nancy: I will.Believe me. Grandma: Come on! Try the apple pie I made for you. Nancy: 10______ That's my favourite.