4. Turn the following sentences into the Passive Voice. 1. We usually keep books on the shelves in our library. - Books are usually kept on the shelves in our library. 2. The librarians store information about library books in the online catalog or in the card catalog. 3. We place magazines and newspapers in the periodical section. 4. You can find the periodical section on your right. 5. You can read microfilms on the microfilm reader. 6. You can use the Internet in the IT centre. You can find it on your left. 7. You can ask a person at the enquiry desk in case you have got questions. ​