Question

Peter ……………………………………………………………………… (clean) the windows for some time.

So far he ……………………………………………………………………… (clean) five of them and there are two more to go.

Answer 1

Вот может правильно но наверняка нет

Answer 2

Peter has been cleaning the windows for some time.
So far he has cleaned five of them and there are two more to go.