You have a pen.- Do you have a pen
My mom has a pen.- Does your mom have a pen
your brother has pen.- Does your brother have a pen
we have a pen - Do you have a pen
不明白的再问哟,请及时采纳,多谢!1. Yes, we do.No, we don't. 2. Yes,she does.No, she doesn't. 3. Yes, he does.No, he doesn't. 4. Yes, we do.No, we don't.谢谢。效率超高啊.Lily has a pen. Lily-莉莉。His cat has a baseball。这俩句子改一般疑问句，并回答。第一个和第四个应该是Yes,I do.老师是这么教学的，你注意点。以后可能会用上哈哈，多谢赐教哟 Lily has a pen。- Does Lily have a pen ? His cat has a baseball.- Does his cat have a baseball ?