Insert articles where necessary: is . 2.my sister plays beautifully. 3.tim flies .he is . was invented by russian engineer popov. 5. wait! .room is not vacant, there are in there. 6. in the morning bill received serious from . now he is writing letter. 7. i took to . 8. have you got ? 9. what do you usually have for ? 10. .earth goes round .

1. A dog is AN animal.
2. My sister plays piano beautifully.
3. Tim flies aeroplanes. He is A pilot.
4. Radio was invented by Russian engineer Popov.
5. Wait! THE room is not vacant, there are students in there.
6. In the morning Bill received A very serious letter from THE boss. Now he is writing A reply letter.
7. I took A taxi to THE station.
8. Have you got A camera?
9. What do you usually have for dinner?
10. THE earth goes round THE sun.