1. If you ________________ a student, you will get a discount on textbooks. (be) 2. Unless you understand the lesson, I ______________________ it again to you. (explain) 3. She suggests _______________________ in that restaurant. (eat) 4. Please let me __________________________ if you know where she lives. (know) 5. They make their living by _________________________ fish in the river. (catch) 6. What can you do in your school ___________________________ pollution? (minimize) 7. You just keep quiet and _________________________ good. (be) 8. What about _______________________ used paper, bottles and cans every day? (collect) 9. The best way to reduce garbage is ________________________________ and recycle things. (reuse) 10. ________________________ trash will pollute the air. (burn)