All over the world, people enjoy sports. Sports are good for people's health. Many people like to watch others play games. They buy tickets or turn on their TV sets to watch in front of them.

Sports change with the seasons. People play different games in different seasons. Sometimes they play inside the room. Sometimes they play outside. We can find sports here and there. Some sports are rather interesting and people everywhere like them. Football, for example, is very popular in the world. People from different countries cannot understand each other, but after a game they often become very friendly to each other.

—How great he is!

We are lucky to live in a rich country where we have many things. However, most of us usually1 some things.

Electricity(电) is one thing that we waste 2. Lights, TVs, 3 and other things are often kept on even when no one is using them. We should turn them off when we do not need them. It 4 less than a second to do it. Anyway, not wasting electricity saves money, because we do not have to 5 the electricity we do not use.

The second thing that we often waste is water. Fresh water is precious(宝贵的) ， 6it shouldn't be wasted. It is only a simple matter of turning off a tap. I am sure 7 can do this easily if he wants to.

8 big waste is food. My mother 9 cook so much food that much of it was thrown away. I told her we had wasted so 10 food. She thought I was right and now cooks 11what we can eat.

It is not 12 to waste anything. I find there is a simple 13of not wasting things. That is to use only what we 14. Do not touch what we do not need. 15 this way we can stop being wasteful.

— For two weeks.

— I used to ____ dumplings, but these days I'm used to _____ bread and milk.

—______________.