1. Have you been playing tennis?

2. Look! Somebody has broken that window.

3. You look tired. Have you been working hard?

4. No, it has stopped.

5. I have lost my address book. Have you seen it?

6. Sorry, I'm late. That's all right. I have not been waiting long.

7. I've been reading the book you lent me, but I haven't finished it yet. It is very interesting.

8. I have read the book you lent me , so you can have it back now.

9. Have you ever been working in a factory? No, never.

10. My brother is an actor. He has appeared in several films.