选择句子补全对话，把序号写在横线上

A. Where are you going? B. You look so sad. C. I'm sorry to hear that. D. Why are you so happy? E. Have a good time!

It's Friday morning.

Miss White：Hi，Sarah.

Sarah：Because my family are going hiking this weekend.

Miss White：Really? That's good.

Sarah：We're going to the Great Wall.

Miss White：

It's Monday morning.

Miss White：Hi，Sarah. How was your weekend?

Sarah：My brother had a cold. We didn't go hiking.

Miss White：