12. Complete the sentences with can, could, may, might, should or must in the positive or negative.
1. Richard's only three but he can, swim very well.
2. You've had that headache for two days. I think you _________ go to the doctor.
3. I was listening very carefully but I_____ hear what she said.
4. I lived in Germany as a child so I _______ speak German then but I _______ speak it now.
5. I know you like sugar but you _________ eat quite so much - it's bad for you.
6. _________ you close the door, please?
7. We ________ move house next year but we're not sure yet.
8. Passengers ________ smoke when the plane is taking off.
9. I think you ________ play tennis with Sally - she ______ play really well.
10. 'll be at work on Saturday so I'm afraid ________ come to the football match with you
13. Complete the sentences with have + to infinitive in the correct form and one of the verbs below. Use have in the present simple.
read explain shout get up open answer decide be stop turn
1. I have to be at work at 9 o'clock in the morning, (positive)
2. We don't haveto get up early at weekends, (negative)
3. She ________all the phone calls at work, (positive)
4._________ you_____ all these books for the exam? (question).
5. I_______ which job I want before the end of the week.(positive)
6. You ___________ I can hear you. (negative)
7. You_______ it to me. I understand the problem, (negative)
8. We ______ _talking when the lesson starts, (positive)
9. She _______ the shop at 9 o'clock every morning, (positive).
10.___ I_____ right at the traffic lights to get to the hospital? (question)
14. Complete the sentences with mustn't or the correct form of not have to.
1. You mustn`t smoke at petrol stations.
2. She ________ come if she doesn't want to.
3. We_______ miss the train. It's the last one tonight.
4. I ______ do this work tonight. I can do it tomorrow.
5. I________ clean the floor today. I cleaned it yesterday.
6. We________ forget to lock all the doors before we go away.
7. They_______ sit in the sun for too long. They might get burnt.
8. We________ stay in a hotel in London. We can stay with my cousin.
9. He________ come home too late. He's got an important day tomorrow.
10.We_______ spend too much money tonight. We've only got a little left.
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