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.