题目内容：

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!