Jack and bill are good friend.变否定句、一般疑问句、作出肯定、否定回答

问题描述:

Jack and bill are good friend.变否定句、一般疑问句、作出肯定、否定回答

答案如下
Jack and bill are not good friend.否定句
Are Jack and bill good friend?一般疑问句
Yes ,they are.肯定回答
No,they aren't.否定回答