In each of the following sentences there is a mistake. Find

In each of the following sentences there is a mistake. Find it and correct it. 1. My secretary said me that he was going home. 2. The employer told we had done our work very badly. 3. He asked me where was I going. 4. The professor asked me if I am listening to the lecture. 5. We had lunch and after we went for a walk. 6. She wondered what had to him happened. 7. Could you borrow me your pen? 8. Hear! Who is playing the piano? 9. Look on the whiteboard! Where is the mistake? 10. London is one of the most beautifulest cities in the world.