Если не трудно 13. sam really to pay more attention during lessons. a)ought b)should c)might 14. you expect me to know everything! a)have to b)can't c)must 15. you to use your mobile phone on an aeroplane. a)aren't allowed b)can't c)don't have 16. let's ask eleanor - she know. a)can b)shouldn't c)might 17. i see you later if i finish work on time. a)can't b)might c)must 18. he to get there before we do. a) is bound b)must c)is able 19. attend the meeting? a) must i b)do i have to c)am i 20. you pay for the hotel room. your company has already paid. a)can't b)don't have to c)mustn't