Somebody lost the keys in the garden. - The keys were lost in the garden by somebody.Somebody has borrowed this book. - The book has been borrowed by somebody.They will charge a fine. - A fine will be charged by them. They make phone calls every day. - Phone calls are made by them every day. When did they publish the book? - When was the book published by them?What did they use to make pizza? - What was used by them to make pizza?