读句子,选择正确的答句。 A. I’m doing my homework. B. Yes, he is. C. She’s playing the piano. D. Yes, I am. E. He’s playing the suona. 1.What is he doing now? ___________ 2.Are you going to have a birthday party? _________ 3.What is she playing? ___________ 4.Is he playing football? ________ 5.What are you doing now? ___________