Although she is pretending hard to be young, grey hair and the lines on her face _______.
Nobody believed his reason for being absent from class__________he had to meet his uncle at the airport.
—It’s thirty years since we last met. —But I still remember the story, believe it or not, __________ we got lost on a rainy night.
— Could you do me a favour? — It depends on __________ it is.
We haven’t settled the question of __________it is necessary for him to study abroad.
If there were no examinations, we should have ______ at school.