1. Who wrote this book? Who this book by? 2. The waiter didn’t clean these tables. These tables by the waiter. 3. Someone stole my bag last Friday evening. My bag last Friday evening. 4. My brother didn’t bake the cakes. The cakes by my brother. 5. The competitor won a gold medal. A gold medal by the competitor. 6. The shop assistant didn’t sell this newspaper. This newspaper by the shop assistant. 7. Did anyone announce the message? the message by anyone? 8. Mel drew a picture. A picture by Mel. 9. I didn’t find the treasure. The treasure by me. 10. Someone hid the bottle behind the curtain. The bottle behind the curtain.