1:is that his pen?改复数 2:she is my good friend.改为一

问题描述:

1:is that his pen?改复数 2:she is my good friend.改为一
1:is that his pen?改复数
2:she is my good friend.改为一般疑问句
3:that is Cheng Long改一般疑问句
4:it's dave.改一般疑问句

are these his pens还有234is shemy good friendisthat ChengLongisitDave