题目内容：

 

Recently we had a heated discussion on whether people        1.

should keep pets at home in cities. Some students think it          2.

a good idea to keep pets, so lots of old people who live        3.

alone at home can get some comforts from pets. Besides,         4.

get along well with animals will make our life interesting.         5.

On the other hand, the other students against the idea.          6.

In our opinion , if too many people keep pets at home, it       7.

will do harm to environment. What’s worse, pets may            8.

make too much noise and even attack to people .                         9.

I like animals, so I don’t think it’s not bad to keep pets             10.

at home. But we must take some measures to prevent them    

polluting our environment .