This is a pen.(this)are pencily
This is a pen.(this)are pencily
this is ------- -------- (pen).There are -------- (pen).填空
This is a pencil and a pen还是This are a pencil and a pen,
this is a my pen
Is this a your pen?
This is a nice pen.
This is a pencil and a pen还是These are a pencil and a pen
This pen is yours.Here you are.
this is 后加"a pen "还是"pen ",为什么"this is paper"可以不加?"these are
what is this?this is a pen.哪错了?
this is a pen.改为复数句
This is a oeange pen对吗?