从方框中选择合适的句子补全对话

A. I like summer best. B. I'm reading a book about season. C. She is taking a dancing class. D. Can your sister go swimming with us? E. Because I can go swimming in summer.

Amy: What are you doing, Sarah?

Sarah:

Amy: Which season do you like best?

Sarah:

Amy: I like summer, too.

Sarah: The weather is too hot. Let's go swimming, OK?

Amy: Great!

Sarah: No, she can't. She is busy now.

Amy: What is she doing?

Sarah:

Amy: Oh, maybe next time. Then let's go!