Insert modal verbs may or can.
1. You … come in when you have taken off your shoes. 2. Be careful: you … spill the milk. 3. Most children … slide on the ice very well. 4. … you see anything in this darkness? 5. You … go when you have finished your test. 6. … I use your pen? 7. You .. read this book. You know the language well enough. 8. You … take this book, I don’t need it any more. 9. Do you think you … do it? 10. What time is it? – It … be about 6 o’clock, but I am not sure. 11. You … take a horse to the water, but you … not make him drink. 12. Where nothing is, nothing … be had there. 13. Love … neither be bought nor sold; its only price is love. 14. Man … not live by bread alone. 15. You … take control of your schedule. 16. ... you tell me the time, please? 17. No more for me thanks. I ... eat another thing. 18. Who is that outside? It ... be the postman - he has already been here. 19. We loved the cake. ... you give us the recipe for it? 20. My aunt ... tell fortunes from tea leaves.