- - Complete the sentences with a modal verb from the box below. Sometimes more than one answer is possible. CAN-CAN'T-COULD- DON'T NEED - MAY - MIGHT-MIGHT NOT - MUST - MUST HAVE - MUSTN'T- NEEDN'T-NEEDN'T HAVE - SHOULD - WILL 1. We can't be able to win, but I don't think we have a good chance. 2. That could be John. He said he was going to travel to Australia. 3. When I was younger, must have sing very well. 4. I think you must have relax more. You have been working too much lately. 5. 1 ask you to help me later, 6. She left the house quietly. I didn't hear her. 7. You to go shopping this weekend. We've got everything at home. 8. You go in without a ticket. All seats are reserved. 9. All passengers put on their seatbelts during take-off and landing. 10. At what age you get a driving license in your country? 11. You watered the plants. Dad has already done it. 12. In the US, young men join the army. It's voluntary, 13. I promise! stop smoking. 14. Mom, you pass me the sugar please? 15. If you want to be a teacher, you attend a teacher's training college. II. ESSAY. Answer the question in 3-5 sentences using modals. Use the back portion of this paper for your answer. What are your obligations as a student?​