If you had told me in advance, I ___ him at the airport. 

You ____be tired—you have worked only for ten minutes．

(2013·合肥一中二模)The school recommends parents ________ their children to swim in rivers or lakes during summer holidays.

— Lucy doesn’t mind lending you her dictionary. — She _______. I’ve already borrowed one. 

 Michael ______ be a policeman, for he is much too short.