Exercise - Complete the following exercises with an appropriate of modal verb of obligation. 1. If you want to work in the USA you [have to, mustn't, shouldn't] speak good English 2. You (shouldn't, have to, must] give someone a clock as a present. 3. You are ill. You must, shouldn't, should] go to school today. 4. You shouldn't have to, must] remember to feed the dog. 5. You [should, have to, mustn't] say anything stupid if you want to keep your job. 6. Tomorrow is Sunday! So [should, mustn't, don't have to] I go to school! 7. You [have to, mustn't, shouldn't] have goals in life. 8. If you see Pauline, you [should, mustn't, has to] be polite to her! 9. You [have to, should, mustn't] forget the lunch with our neighbours! 10. Please, tell her that she [have to, has to, mustn't] get good results at school!
