The most frightening thing the author did during the program is ______.

A．She shares a room with three students and the rent is too high.
B．She isn’t getting along well with her roommates.
C．The cost of living with an American family is too high.
D．She feels offended when someone in her host family is prejudiced against her.

A．She is buying a ear.
B．She is insuring her car.
C．She is renting a car.
D．She is putting gas into the tank.