1. There are many people in the room 

2. There were lots of children in the school yard yesterday

3. They are listening to music now. They are not watching TV.

4. Do you often go to the zoo on weekend?

5. Look! The sun is shining brightly at the moment.

6. It's ten o'clock now. Lan is skipping rope with her friends in the yard. 

7. Is there a clock in your classroom?

8. We wash dirty clothes every day, but we are not washing them now.

9. His mother goes to the supermarket every Sunday, but my mother went there this morning.

10. She liked sweets when she was a kid.

11. I always have breakfast at 6 o'clock, but this morning I had it at 5:30.

12. Who is waiting for you now? - My friend is waiting for me.

13. He lived in the countryside 2 years ago. Now he is living in the city.

14. Who do you live with? - I live with my parents and sister.

15. Ha comes to shcool with her sister everyday but yesterday she went with her best friend and now she is going with a schoolmate.

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1. Are 
2. Were 
3. Are listening /aren't watching 
4. Do you often go 
5. Is shining 
6. Is skipping 
7. Is there 
8. Wash / aren't washing 
9. Goes / went 
10. Liked
11. Have / had
12. Is waiting / is waiting 
13. Lived / is living 
14. Do you live / live 
15. Comes / went / is going