单项选择题 A．Useful skills.B．Applied courses.C．Finding a job.D．Working close with the teachers.

单项选择题 A．At the back of the plane.B．In the smoking area.C．ES, by a window.D．ES, at the hack of the plane.

单项选择题 A．Because something is wrong with the plane.B．Because it's foggy at the London airport.C．Because of weather problem in Milan.D．Because of waiting for a late passenger.