this is a book改为复数形式
this is a book改为复数形式
This is a book.(改为复数形式)
There is a book.改为复数形式
This is my book.(改为复数形式) There is a nice cat in the tree.(改为
This is my book.改为复数形式 There is a nice cat in the tree.改为复数形
How much is this English book?(改为复数形式)
This book is in that box.(改为复数形式)
This is an Enlish book.(改为复数形式)
This is a box.改为复数形式
This is a pen.(改为复数形式)
This is a cat.(改为复数形式)
This is my box.改为诶 复数形式 Is this he book?改病句 Is it a head and