Ex 1 Choose the best answer:

6. We all want to go home. We(ride)… this bus for over 5 hours.

7. The lost girls haven't been found yet. A crew of volunteers(search)… … for them for 2 days.

8. Gabriela(study)… a PhD. It took her 6 years, but she finally got her diploma.

9. The lecturer(speak)… for more than 1 hour!!! I just want him to finish!!! 10. There is a construction site behind my house. They(make)… a lot of noise and it is driving us crazy!!!

(помогите пожалуйста ,срочно)​