Здрасти!Мне быстрее нужна проверка, выполнила ли я правильно задание. Разройте скобки

Здрасти!
Мне скорее нужна проверка, выполнила ли я правильно задание.
Разройте скобки поставив слово в Present, past, либо 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 2-ое задание:
Разройте скобки поставив слово в Present, past, либо 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 заключительные два предложения перевести!