I need help on 4-12 please :) i will mark brainliest

4. Simple

5. Complex

6. Compound

7. Compound

8. Simple

9. Complex

10. Complex

11. Complex

12. Complex

Hope this helps!

1. I have been working on my project since yesterday .

2. We have been studying for last 7 hours.

3. He has been playing for an hour.

4. She has been waiting for several hours.

5. I have been searching for my books since morning .

6. They have been roaming around since morning.

7. Have you been doing your work for last 3 hours ?

8. My sister has been singing songs for last 2 hours .

9. Have you been roaming around since morning ?

10. I have not been out since morning .

Explanation: