The man over there _________ be over fifty. He looks so young.

“No student,” the headteacher stressed, “_______ go out of the school after ten o’clock at night without my permission.”

----Did you go to the cinema last night? ----No, We    , but our car broke down on the way.

“Passengers _____ not have their breakfast on the light train”. This rule arouses heated debates in Chongqing.

(2014·山东省实验中学一模)You________get an all­expense­paid vacation to Australia if you can answer all the questions.