1. The sun rises in the east and sets in the west.
2. Although the sun is rising I cannot see it because it is behind the clouds.
3. Do you play the piano? - No, I don't.
4. I hear somebody playing in the next room; who is playing there?
5. It is pleasant to be at home when a storm rages outside.
6. There are so many people there; where are they all going?
7. As a rule I feel rather tired after my walk.
8. Thank you, now I am feeling much better.
9. He swims very fast.
10. Look! Somebody is swimming over there.
11. Where is Alec? - He is in the garden. I think he is doing his morning exercises.
12. He always does his morning exercises with the window open.
13. I'd like to see Professor Smith. - Sorry. He is out at the moment. He is giving a lecture.
14. Sometimes he gives his lectures in English for the students of the English department.
