Present perfect. Change the following sentences to questions.

1. I have seen this show.

2. Faruk has lived in this town all his life.

3. They have left.

4. It has stopped working.

5. They have started playing.

6. Trent has finished cleaning.

7. She has tried to contact you.

8. They have solved the problem.

9. They have been here before.

10. Quincy and Janet have worked together.