this is my pencil.(改为一般疑问句并作否定回答）

this is my pencil.(改为一般疑问句并作否定回答） This is a pencil box改为一般疑问句 并作肯定及否定回答 1、this is a pencil box.(改为一般疑问句，并作否定回答) this is my pencil.(变为一般疑问句并作否定回答) what's e This is my pencil 改为一般疑问句 并作肯定回答 This is my sister,Jenny.(改为一般疑问句并作否定回答） This is my good friend.（改为一般疑问句并作否定回答） Helen is my friend.（改为一般疑问句并作否定回答） This is my jacket.(改为复数句） 1That is a book.(改为一般疑问句,并作否定回答） This is my dictionary.(改为一边 This is my sister.(改为一般疑问句,并作否定回答) This is my book.改为一般疑问句,并作肯定或否定句回答 This is my friend改为一般疑问句并作否定回答