PERFECT MODALS MISHIMASH.
1. You were wrong to study so late! You shouldn't ...
2. Did you manage to stop him? Were.
3. It wasn't necessary to work hard. I didn't
4. Perhaps Tim has lost his way. Tim might
5. it was possible for you to hurt yourself. You could ...- ... ...
6. It would have been a good idea to tell me. You should... ...
7. I'm sure the class enjoyed it. The class must.
B. I helped her but it wasn't necessary. I needn't
9. It was a mistake to leave. You ought
10. I'm sure the butler didn't do it. The butler can't​

Many wildlife habitats will be destroyed if man keeps polluting the environment.
2. If we dump all sorts of chemicals into rivers, we will not be able to swim in them in the future.
3. If we do not stop cutting down so many trees, we will endanger our oxygen supply.
4. Soon the Earth’s resources will be exhausted if the human population continues to grow.
5. If everybody continues to use aerosols and CFCs, the hole in the ozone layer will get bigger.
6. If the sun radiation can’t escape into space, Earth’s temperature will increase steadily.
7. If the global temperature rises, sea levels will rise too.
8. We’ll threaten our own existence if we do not cut down on waste rapidly.
9. People will run out of drinking water one day if they do not use it more rationally.
10. If he wants to help the planet, then he has to change his habits

Among the graduates of many well-known names: Nobel laureates Mikhail Gorbachev and Sakharov; poets Balmont and Lermontov; singer Zemfira. Outwardly, it seems that the steeple, as well as the crowning of his star and ears covered with gold, but it is not. Spire, Star, and ears are lined with amber glass plates, the inside of the glass plates coated with aluminum. Currently, part of the glass parts collapsed and crumbled, if you look through binoculars, can be seen in various places gaping holes. In 1953, the Moscow State University has received a new building - a skyscraper of 36 floors on the Sparrow Hills. With its construction involves a lot of interesting facts and rumors. So, originally designed by the building allegedly had not crown the spire, and the golden statue of Stalin. However, shortly before the end of construction the Soviet leader died, and it was decided to replace the statue on the spire. Фух, было нелегко ;)