Fill in the blanks with a suitablemodal verb.1. You ______ brush your teeth after every meal.2. The boys ______ train hard if they want to win the competition.3. If it does not rain tomorrow, we ______ go for a picnic.4. ______ you like to join me for a trip up Cameron Highlands ?5. You ______ pay Rs 50 if you want to take part in the contest.6. ______ I go to the toilet please ?7. Children ______ respect their elders.8. Mrs. Tay _______ leave for Bangkok tomorrow for a business meeting.9. I ______ take a holiday after working tirelessly on this project.10. Although Daniel is an obedient child, he ______ be rebellious at times.11. ______ I get you something for your headache ?12. You ______ definitely get what you want if you work hard for it.13. The detectives found a clue that ______ have been left behind by the culprits.( would,should,might,can)14. They ______ be a little late because they have just left the office.15. Please, ______ you tell me the time ?(could,should,must ,may)16. Sandra ______ have revealed Henry's secrets to Fran. Now Henry's upset with her.(cannot,must not,should not,would not)17. Trina ______ swim very well ! Her father taught her swimming when she was very young.18. What ______ the boys do to make up for their mistakes ?(may,cannot,must not,can)19. We ______ listen to our parents' advice regarding this matter.(can,ought to,may,cannot)20. ______ you play the radio that loud ?(must,could,can,might)