按要求完成下列各题。（英语）

1.This is a pencil.(改为否定句) This isn't a pencil.
2.That is a ruler.(改为否定句) That isn't a ruler.
3.This is my book.(改为一般疑问句) Is this my book?
4.That's her eraser.(改为一般疑问句) Is that her eraser?
5.This is a key.(对划线部分提问，划线部分为a key) What is this?
6.That's a dictionary.(对划线部分提问，划线部分为a dictionary)What is that?
7.Is this your ID card?(作肯定回答) Yes, it is.
8.Is that hie watch?(作肯定回答) Yes, it is.

1. this is not a pencil.
2. that is not a ruler.
3.is this my book?
4. is that her eraser?
5.what is this?
6.what is that?
7.yes, it is.
8.yes, it is.