Fill in ought to, should, must, mustn't, shall, can, can't, needn't, or didn't need to. 1. he be more careful. 2. that be sam's book. 3. he be her brother.he is too old. 4. you play in their garden. 5. they repair the car two days ago.6. you eat so much. 7. i open the window? 8. she be the woman who spoke to me.9. we go shopping with our parents today. 10. she really be 40 years old? 11. he study harder. 12. you leave the camp on your own. 13. you take a cassette player or walk-man when you go to the camp. 14. you wait for them. 15. i post this letter for you?