It was after he got what he had wanted ________he realized it was not so important .

It was ______ the old clock that the old man spent the whole morning at home.

 Is _______ three hours _______ the poor boy to come to school on foot?

—How long is it ______ you picked up your badminton training?—It was not until my finance became better last December _____ I started the training.

It was because of bad weather ____ the football match had to be put off.