1. She had to ( глагол to have to, как и глагол to be to = должен - является эквивалентом глагола must и взят здесь вместо него в времени, т.к. у самого глагола must есть всего одна форма и чтобы сказать должен был в предложении взят эквивалент в времени- had to). leave her book at home because she was in a hurry. (То есть надо здесь сказуемое - эквивалент had to - должен был, поменять на другой эквивалент to be to в форме времени - was to , от глагола must -должен,должна ) 2. He could obtain divorce last year. ( У глагола can - эквивалент -глагол to be able to: изменяем его на was able to) 3. Tim may come home very late last night. (may = эквивалент - to be allowed to;меняем глагол may на эквивалент is allowed to, так как подлежащее в предложении стоит в 3лице, ед. числа) 4. He could not go to the concert 2 days ago. (to be able to меняем на форму времени в единственном числе - wasn't able to)
Dear Ms Walters, Thank you for your application for the diploma in tourism but I regret … (to inform) you that this course is now full. Should you wish to take the course elsewhere, I would advise you … (to apply) to Central College. They started … (running) a course in tourism a year ago and I would recommend you … (considering) … (to enroll) on that course rather than … (wait) another year to do a course here. If you would prefer … (to wait) for this course, then I would encourage you … (to try) … (to find) some work related to tourism so that you can start … (acquiring) some relevant experience.