1. If we don't arrive on time. our teacher will be angry.
2. I will watch Tv if I have time.
above
3. If he gets up at 5 o'clock.
4. We will be hungry
5. If the phone nngs.
6. I will laugh
7. If our exam isn't tomorrow.
8. They won't buy a new car
9. If you hit me.
10. I'll give you ten dollars
11. If he doesnt take a bus,
12. The glass will break
13. If I don't watch that movie
14. My boss will get angry
15. f the weather is nice tomorrow
​

1. Nick was not at home at that time. Was Nick at home at that time?
2. You were not angry with me. Were you angry with me?
3. The little girl was not afraid of the dog. Was the little girl afraid of the dog?
4. We were not ready to have a test in English. Were we ready to have a test in English?
5. The baby was not asleep. Was the baby asleep?
6. The boys were not at the stadium yesterday. Were the boys at the stadium yesterday?
7. You were not glad to hear this news. Were you glad to hear this news?
8. Her parents were not at the theatre last night. Were her parents at the theatre last night?
9.Their house was not the finest in the street. Was their house the finest in the street?
10. They were not silent for awhile. Were they silent for awhile?

Our Earth is our home. I think people must take care of it.
There are some laws and decisions on this important subject.We have state organizations which pay attention to this issue. There are a lot of industrial enterprises in our country that's why we cannot ignore the problem of protection of environment. Our environment must be clean. We have to control atmospheric and water pollution, to study the man's influence on the climate. If we don't use chemicals in proper way we'll pollute our environment.
There are many kinds of transport in our big cities,that is why we must pay attention to the protection of our nature.
 The people all over the world do everything to protect their nature,to make their country richer,to make their life better.