若y=1-4x+8x-2+12，则yx+xy=______．

选词填空(共10小题，每小题1分，共10分）

make , many, have,  but,  is ,  read,  with ,  playing,   dogs,   him

 
My name is Peter. I _小题1:__ got a dog.  I like the dog very much, ___小题2:__ I don’t know how to look after(照顾) him. There _小题3:___ a library in front of my house. So I often go there to _小题4:___some books about dogs after school. Every morning I walk ___小题5:___ Bob behind my house. There are __小题6:___ dogs there. Bob can play with other _小题7:___ there. He likes __小题8:___ with balls. He likes meat best, so I often go to buy some for___小题9:____. I also __小题10:___ a small bed for him in my room. Bob likes it very much.