选词填空 pilot future professor world hard Guoguo: What will you do in the 1._______, Maomao? Maomao: I will be a 2.______. I will fly a plane or a spaceship. I want to see the 3.______. Guoguo: My father is a professor. I want to be a 4.________, too. Maomao: You must study very 5._____ to be a professor. Guoguo: You're right. I'm studying hard and will do so in the future.