问题描述:
帮我把英语改成否定句和一般疑问句
1this is an eraser
2this is your pen
3this is your pencil
4that is your ruler
5that is my ruler
6it's a pencil case
1this is an eraser
2this is your pen
3this is your pencil
4that is your ruler
5that is my ruler
6it's a pencil case
问题解答:
我来补答展开全文阅读