从方框中选择正确的句子补全对话。

A. Thank you, Amy. B. What are you doing? C. I'm washing the fruit. D. Can you open the door? E. Amy, where are you?

Ms Smart is washing clothes. The bell is ringing.

Ms Smart: Sam, the bell is ringing. Please open the door.

Sam: Sorry, I can't.

Ms Smart:

Amy: I'm in the bedroom.

Ms Smart:

Amy: I'm reading a book.

Ms Smart: The bell is ringing.

Amy: Yes, I can.

Ms Smart: