1.It is a ruler 、(改为否定句) 2.call ,Tom ,please ,at ,821_0359 （连词成句）3.This a pencil .(改为一般疑问句)4.Is that her book (做否定回答)5.not ,is ,my ,it ,backpack .(连词成句)6.This is （a pen） in English .(对括号部分提句)7.It is a ruler .(对括号部分提句)

It isn't a ruler Please call Tom at 821-0359
Is this a pencil No,it isn't It is not my backpack. What's this in English?

1. It is not a ruler.
2. Please call Tom at 821-0359
3. Is this a pencil?
4. No. That's not her book.
5. It is not my backpack.
6. What is this in English?
7. What is it?

答案：1、It is not a ruler 2、Please call Tom at 821-0359 3、Is this a pencil?4、No,it isn't
4、It is not my backpack 5、What is this in English?6、What is it

1. It is not a ruler.
2. Please call Tom at 821-0359
3. Is this a pencil?
4. No, it isn't.
5. It is not my backpack.
6. What is this in English?
7. What is it?