Раскрой скобки, используя Present Perfect Progressive:
I ( to look) for my book for an hour.
They ( to quarrel) for such a long time.
How long they ( to practice) today?
It’s ( to rain) all day.
She ( to live) here since childhood.
We ( to drive) for about two hours.
have been looking
How long have they been practicing today?
It's been raining all day.
has been living
have been driving