Only _____ as an interpreter _____ how important it was to practise speaking English.

Tom realized that he ________ his physics book at home when he reached school．

Did you find the small village yesterday? —Yes, without any difficulty, for it has __________changed over years.

I think that this meal was well worth _______ was charged for it.

I _________ my mum cook dinner in the kitchen when the telephone ______.