Заполнить пробелы, словами : can, may, ought to, mustnt, could, must,

Заполнить пробелы, словами : can, may, ought to, mustnt, could, must, should, neednt, be able to, have to, to be to. 1) Hurry up. The bus____leave in a quarter of an hour. 2) Im sure he ___ not do such a thing. You ___ speak to him yourself. 3) When I was young, I ___ walk for many hours running (подряд). 4) The concert ___ be held yesterday but it was put off because of the illness of the pianist. 5) I wont ___ to translate this text until I look up all the new words. 6) You ___ go to a post-office. You ___ drop your letter in any post-box. 7) We ___ isolate the boy. He ___ infect other children. 8) We ___ fight against international terrorism with all possible means. 9) You ___ visit your parent more often. They are very lonely. 10) You ___ speak to your teachers in such a way.