1. 'Where's my pencil?' 'Jane has taken it.'
2. It's the last day of my holiday, and I have written postcards to all my friends. 3. John can't play tennis today. He has lost his tennis shoes.
4. 'You have eaten all of the pizza!'
5. He isn't very tired. He hasn't run as far as me.
6. Oh, no! I haven't done my homework!
Good Luck!