CAN,COULD,MAY AND MIGHT
1. They might be away for the weekend but I'm not sure.
2. You may leave now if you wish.
3. Could you open the window a bit, please?
4. He could be French, judging by his accent.
5. Can you play the piano?
6. Listen, please. You may not speak during this exam.
7. They can't still be out!
8. You couldn't smoke on the bus.
9. With luck, tomorrow could be a sunny day.
10. You might be right but I'm going back to check away.
11. The exam might be easy. You never know.
12. I might go to the party but I'm not sure yet.
13. Students may study in the library from five to nine in the evening.
14. Could you lend me 40 Euros til Monday?
FURTHER PRACTICE
1. If you had the chance, what would you change?
2. By the time the police arrived, the robbers had long since gone.
3. To really get any benefit, you need do it properly.
4. People have been visiting the Elfin Oak in Kensington Gardens for more than 80 years.
5. Normally, no one would ever go there, especially after dark.
6. By the year 2008, most scientists had accepted global warming as real.
7. Through out his whole life, he could never forget the awful things he had seen.
8. They had to wait nine hours for their train to arrive in Potosi.
9. Previously, the area had already been explored by the Dutch.
10. At one time, he used to drink 5 coffees a day.
11. He had to get a summer job to pay for his holidays.
12. He wasn't able to afford the expensive fees.