Хелп на англ нужнооо​

3peter can pay for us. (question) can peter pay for us 4 we must go to the passport office today. (negative) we mustn' t go.. 5 we can go to the bank tomorrow. (negative question) couldn 't we go.. 6 you should phone the school today. (negative) you shouldn 't phone 7 you can answer all the questions. (question) can you answer 8 she can pay for the lessons. (negative) she can't pay 9 you can talk to mary for me. (question) can you talk 10 peter can check the times of the trains for us. (question) can peter check 11 we must say goodbye to alan and sue. (question) must we say 12 they can stay here for a week. (negative) they can ' t 13 we can buy a return ticket here. (question) can we buy 14 they should help you. (negative) they shouldn 't 15 he can understand me. (negative question)couldn t he understand me