Ответ:

3.

1. has been

2. am still working

3. is doing well

4. have lost

5. have taken

6. know

7. am

8. are now living

9. has finished

10. is running

11. are looking

12. have lost

13. are having

4.

1. He has been watching TV since morning.

2. I am having an English class at 8 o'clock tomorrow.

3. The air of the city is becoming more and more polluted.

4. I have lost my purse.

5. Her hair is dirty. She has been painting the house all day.

6. You are always losing something!

7. You have been writing an essay for two hours already.

8. I go to the swimming pool three times a week.

9. Father has been fixing the car since morning.

10. He has broken his leg.

Объяснение: