1. I can run for a long time.2. He may/might come next week.3. You need take this medicine, or else you are going to fall ill.4. You should do some swimming every day.5. It’s so cold that you have to put on this warm coat.6. You must do something for your brother.7. May/ Could I take this journal?8. He must know it.9. I must come here at 8 a.m.10. I would like to take this book. Might anything prevent me from doing this?