Ex4. Complete the advice with words from Exercise 3.
* Don't leave your electronic devises on when you go to sleep.All those little red or green lights more energy than you think!
* Don't 4 water. Have shorter showers, and when you brush your teeth don't use water until the end.
* how much meat you eat by going vegetarian one day a week.
* the heating and put on
* a jumper.
* 7 plastic bags and bottles so you can use them again.
2. Whatever you do, you mustn't touch that switch. It`s very dangerous.
3. You mustn't forget what I told you. It`s very important.
4. We don't have to leave yet. We`ve got plenty of time.
5. Ann was feeling ill last night. She had to leave the party early.
6. I had to go to the bank yesterday to get some money.
7. The windows are very dirty. I must clean them.
8. The windows aren`t dirty. You don't have to clean them.
9. We arrived home very late last night. We had to wait half an hour for a taxi.
10. These cakes are very nice. You must have one.
11. We don't have to take an umbrella. It`s not going to rain.
Perfect 4. has been analysed 7. had analysed 2. had heated 3. shall have been heated 5. will have heated 1. have been transformed 4. will have transformed 5. has transformed 2. have tested 5. had been tested
Perfect Continuous 7. has been heating 6. will have been transforming 7. has been testing
Simple 1. was analysed 2. will analyse 5. analysed 1. shall heat 6. heat 3. transforms 3. tests 6. is tested 8. shall be tested