My friend is last name is .改为一般疑问句并作否定回答再对My friend is last name is Dale.是 给"Dale"划线词提问

问题描述:

My friend is last name is .改为一般疑问句并作否定回答
再对My friend is last name is Dale.是 给"Dale"划线词提问

what‘s your friend's last name?
I don't know.