Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to prevent students from cheating [title] Don't allow access to test materials. [step] It is important to keep test materials secure before a test. This includes making sure that all copies and the original are accounted for after copying.

Ending1: [substeps] Don't leave important documents or ideas out in the open. Always be sure that any students and faculty members in your class have the right to access the tests. Ending2: Some students may try to access test questions before a test, even if that means they have to break into your classroom or office to get them. [substeps] To prevent this, never leave your keys hanging in the door and don't give them to a trusted student for any reason. Ending3: Make sure that you don't lock your class door or give a password to anyone who enters your classroom. [substeps] Exam-deadlines are an important reason to prohibit classroom access. Ending4: This way, students may find it hard to duplicate material from the test. [substeps] If you want to make sure that students, you should try to keep the material in a separate folder that is easily accessible to all students.

Answer format: ending1/ending2/ending3/ending4