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