2 Match the words from Exercise 1 with the sentences. 1 This is the mixture of gases around the Earth atmosphere 2 This is the where the stars and planets are. It is the outside the Earth's at 3 This is the word for any of the large round objects that move around the 4 This is the word for the typical weather in one place. 5 This is the time in the morning when the Sun appears. 6 This is the name of the planet we live on. 7 This is everything that eksts: space, stars, planets. 8 This is the time in the evening when the sun disappears. 9 This is a large area of water on Earth. 10 This is the round white object we see in the sky at night. It moves arou
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