Make questions for these sentences. Start with the words in brackets.

1. These books are used inside the library. - Where are these books used?
2. After two hours the books are returned to the Desk. - When are the books returned to the Desk?
3. Short loan books are also borrowed overnight two hours before the library closes. - What books are also borrowed overnight two hours before the library closes?
4. Fines of 50p per hour per book are charged for late returns. - What fines are charged for late returns?