Question

Употребите глагол в Present Perfect Continuous. 1. They (watch) TV since 9 o`clock. 2. I (wait) for you since 10 o`clock. 3. He (work) in the garden for 3 hours. 4. She (sleep) for 5 o`clock. 5. We (clean) our room for 10 minutes. 6. They (learn) new words for an hour. 7. My dad (fix) his car since the early morning. 8. We (drink) tea for 5 minutes. 9. I (run) in the park for 3 hours. 10. She (cook) dinner for 2 hours.

Answer 1

1. They have been watching TV since 9 o`clock.
2. I have been waiting for you since 10 o`clock.
3. He has been working in the garden for 3 hours.
4. She has been sleeping for 5 o`clock. 
5. We have been cleaning our room for 10 minutes.
6. They have been learning new words for an hour.
7. My dad has been fixing his car since the early morning.
8. We have been drinking tea for 5 minutes.
9. I have been runing in the park for 3 hours.
10. She has been cooking dinner for 2 hours.

Answer 2

Для образования Present Perfect Continuous используются глагол "have" в форме Present Perfect (в данном случае "have" для всех лиц) и основная форма глагола с окончанием "-ing". Вот исправленные предложения:

1. They have been watching TV since 9 o'clock.
2. I have been waiting for you since 10 o'clock.
3. He has been working in the garden for 3 hours.
4. She has been sleeping since 5 o'clock.
5. We have been cleaning our room for 10 minutes.
6. They have been learning new words for an hour.
7. My dad has been fixing his car since the early morning.
8. We have been drinking tea for 5 minutes.
9. I have been running in the park for 3 hours.
10. She has been cooking dinner for 2 hours.