Paraphrase the following sentences using the modal verbs can or may in the correct form. 1. i don't believe that he had done the work carelessly. 2. perhaps, you changed at the wrong station, that's why it took you so long to get here. 3. i think he will be able to substitute for you in case you shouldn't come. 4. is it not in your power to change the time-table? 5. most probably he did not see you, otherwise he would have come up to you.! 6. perhaps i shall have to take him to hospital; it is possible that he has broken his arm. 7. why blame her? maybe she did not know it was so urgent. 8. it is impossible that she has wrongly interpreted your words. 9. i suppose they were unable to get in touch with you. 10. would you mind my smoking here?