اینو حل کنید بی زخمت معرکه میدم

1. must be written 2. must be sent 3. be spent 4. must be used or can be used 5. be paid 6. be kept 7. must be obeyed 1. had eaten 2. had learned 3. arrived 4. had studied 5. had paid 6. had seen 7. had gotten 8. had made 9. had fallen 10. had studied 11. had eaten 12. had already fallen 1. Can ice be converted into water in cold weather? 2. They must be informed about the result today. 3. The parents should be called by the teacher. 4. The bill must be paid before leaving the restaurant. 5. Should garbage be taken to landfill by workers?