题目内容：

按要求完成下列各题。

1.The ruler is yellow. (对画线部分提问)

____ ____ is the ruler?

2.jacket, this, is, blue(.) (连词成句)

__________________________________________________________________________

3.It's a ruler.(改为否定句)

It ____ ____ a ruler.

4.It is a_book．(对画线部分提问)

____ ____ this?

5.How are you？(作出肯定回答)

____ ____．