1) You look very sleepy. You ________ go to bed so late when you have to get up early the next day. a) don't have to b) shouldn't 2) You ______use your phone during the exam or the teacher will take it away from you. a) don't have to b) mustn't 3) I ______finish this work before dinner, but I’m so hungry I can’t wait any longer. a) ought to b) shouldn't 4) My dad ______ come home at lunchtime because there’s a good restaurant near his office. a) doesn't have to b) mustn't 5) We ______ post this parcel before six o’clock or it won’t arrive in time for Jane’s birthday. a) have to b) don't have to 6) In our school, we ________ wear a uniform. a) shouldn't b) don't have to 7) You _________ pay attention when people are speaking. a) ought to b) mustn't 8) You ______ put water on an electrical fire. a) don't have to b) mustn't 9) In some countries you ______ for an X-ray. a) should b) have to

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