补全对话。 Grandma: You look sad, Nancy! __ 1 __ Nancy: I don't know, Grandma. I am tired and feel like doing nothing. Grandma: Are you ill? Nancy: I'm not sure.__ 2 __ Grandma: Why don't you want to go to school? Nancy: I had an exam last week, but I failed it. Grandma: __ 3 __ you have worked hard I know. You were just unlucky. And one exam doesn't mean all. Nancy: But I'm afraid mum a nd dad will __ 4 __ 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: __ 5 __ That's my favourite.