Mr. Hunt works in a factory. There he drives a truck.   He is busy all the time and often has to work at weekends. His wife is a nurse in a hospital and likes to keep things tidy and clean. She does all the housework alone.

One Saturday Mr. Hunt went to work. Mrs. Hunt was at home. She wanted to clean the house and cook the lunch. There were a lot of dirty clothes in the bathroom. But she didn't feel well. She began to clean the floor of the bedroom, but she was too ill to go on. Just then there was a knock at the door. She walked slowly to open the door.

When the door opened, she saw it was Sally, the girl who lives next door. Sally came into the house. She looked round and found the house was not as clean as usual. Then she looked at Mrs. Hunt and asked, "Why aren't you wearing your glasses today?"

Nearly everyone knows McDonald's. It is a fast food ____. Almost everyone says fast food is not healthy.   But they still eat a lot of it.   McDonald's can make us _____. Once a man ate it for three meals a day for a month.   By the end of the month, he had put on more than 20 pounds and he felt ______ all the time.

Lots of Americans just ______hamburgers, pizzas or hot dogs for meals. But fast food has lots of fat food. Many people who like fast food are _____. Will the same thing happen in China? These days KFC and McDonald's are really popular in China.   Sooner or later Chinese children would become fatter, too.

No air, no life.   We can not see air, but there is air all a________ us and it gives life to every living things. We cannot live without it.   Bad air makes people i________.   We must have clean air to keep us in good health.

In the city there are a great many p______ and there are too many cars running on the road. That makes air dirty. Every day we take in dirty air. This makes us f______sick.

There are many cars and factories in the city.   The smoke is usually b_________. This is very bad for our health. So in order to get some fresh air, we should grow more trees.

Wu Dong has a good friend.   His name is Peter.   He is from America. Wu Dong and Peter are in the same class.   They go to school five days a week.   They stay at home on Sundays and Saturdays. Peter likes China and Chinese food.   He likes rice cakes very much. At school they play table tennis after class.

Wu Dong and Peter likes making things. Now they are making a plane. They like flying planes on Sunday mornings. Peter speaks English and a little Chinese. Wu Dong speaks Chinese and a little English. They teach each other. They believe good friends should help each other.