介绍:
Are you are you are you? Yes, I am. No, I am not. Is it is it is it? Yes, it is. No, it isn't. 。。 。。 Do you do you do you? Yes, I do. No, I don't. Did you did you did you? Yes, I did. No, I didn't. 。。 。。 Have you have you have you? Yes, I have. No, I haven't. Has she has she has she? Yes, she has. No, she hasn't. 。。 。。 Can you can you can you? Yes, I can. No, I can't. Could you could you could you? Yes, I could . No, I couldn't.