Здравствуйте!
Мне скорее нужна проверка, выполнила ли я верно задание.
Разройте скобки поставив слово в Present, past, или future perfect. Переведите.
1 The telegram came some minutes after he (to leave).
2 How many pages you ( to read ) by 5 o'clock tomorrow?
3 The children already (to decide) what to do with the books.
Мои ответы:
The telegram came some minutes after he had left. (past)
How many pages you will have read by 5 o'clock tomorrow? (future)
The children already has decided what to do with the books. (Present)
И второе задание:
Разройте скобки поставив слово в Present, past, или future perfect cont.
1 I (to wait) for you since two o'clock.
2 By the time he arrives in London, John (to drive) for 5 hours.
3 He had a backache. He (to dig) the garden.
Мои ответы:
I have been waiting for you since two o'clock.
By the time he arrives in London, John had been driving for 5 hours.
He had a backache. He will have been digging the garden.
И очень прошу последние два предложения перевести!

The telegram came some minutes after he had left. (past) – все ок! How many pages you will have read by 5 o'clock tomorrow? (future) – вспомогательный глагол will в вопросе стоит перед подлежащим. Правильный ответ: How many pages will you have read by 5 o'clock tomorrow? The children already has decided what to do with the books. (Present) – нужно использовать глагол  have ( т.к. children – это мн. число) и already стоит между  have и  decided,  правильный ответ: The children  have already decided what to do with the books. I have been waiting for you since two o'clock. - Present By the time he arrives in London, John will have been driving for 5 hours. – здесь  future К тому времени как он приедет в Лондон, Джон будет вести машину уже  5 часов. He had a backache. He had been digging the garden. – здесь Past У него были боли в спине. Он копал огород.