Упражнение 5. Write the sentences again without changing the meaning. Use one of the modal verbs in brackets.

1. It's possible Mary saw him. (must/may/can) Mary **may** have seen him. (Возможно, Мэри видела его.) 2. I am certain Peter has got lost. (should/could/must) Peter **must** have got lost. (Я уверен, что Питер заблудился.) 3. My advice is that you stop. (should/must/could) You **should** stop. (Я советую тебе остановиться.) 4. Perhaps we went to London. (must/can) We **can** have gone to London. (Возможно, мы ездили в Лондон.) 5. I am sure Pierre is French. (can / must/ could) Pierre **must** be French. (Я уверен, что Пьер француз.) 6. It's not possible that Peter kissed Helen. (can't / should) Peter **can't** have kissed Helen. (Невозможно, чтобы Питер поцеловал Хелен.)