Употребите модальные глаголы сan, may, must:
1. ..I come in? 2. I … swim, it’s a pity. 3. … I use your dictionary? 4. You .. give an answer at once. 5. I … come and see you tomorrow, if I have time. 6. You … finish the work tomorrow. 7. You … go, if you have done the exercise. 8. You … come to college on time. 9. The child … read and write, he is a pupil. 10. You … stay here as long as you like.