This is a mouse.(改为复试形式)

This is a mouse.(改为复试形式) it is a mouse改为复数句 the cat is chasing a mouse now.改为同义 句 This is a big mouse的复数形式是什么? it is a mouse.复数 This is a book 改为复数句 This is a pear.改为复数句 this is a book改为复数形式 This is a dress.改为复数形式 this is a tree 改为复数句 This is a desk.(改为一般疑问句) This is a ruler 改为一般疑问句 this is a pencil 改为一般疑问句 Is this a bus （改为复数句 This is a bus.改为复数. this is a shirt改为复数句 this is a strawberry改为复数 This is a young tree.(改为复数)