［B］ Jill missed her class last week.         ［D］ She is in the same class as the man.

    18.     ［A］ A computer game.          ［C］ An exciting experience.

    ［B］ An imaginary situation.            ［D］ A vacation by the sea.

    Questions 19 to 21 are based on the conversation you have just heard.

    19.     ［A］ Beautiful scenery in the countryside.     ［C］ Pain and pleasure in sports.

    ［B］ Dangers of cross-country skiing.    ［D］ A sport he participates in.

  &n