从方框中选择恰当的选项，补全对话。(有两项多余）
A: Mary, it's your bed time.    1  
B: Oh, Mum!   2    It's Friday evening and it's still early.
A: Yes. Tomorrow we have to get up early to catch the train to your grandpa's.
B:    4   OK, I'll go to bed right now.    3    Oh, Mum, do I have to brush my
teeth before I go to sleep?
A:    5    And don't forget to close the bedroom window.
B: I won't. Good night, Mum!
A: Good night!