单项选择题
A．to take an experienced pilot in a plane B．to be taken up into the air in a plane by an officer C．to fly a commercial plane D．to talk about his ideas
A．the students to fly the plane all the time B．all students to fly the plane C．the students who were not frightened to fly on their own D．some students to fly a little while
A．to fight the war B．to fly C．to he a pilot D．to be a passenger