—MustIgotomedicalschoolandbeadoctorlikeyou，Dad?    —No，...

问题详情：

— Must I go to medical school and be a doctor like you，Dad?

      — No，you__________，son．You’re free to make your own decision．

      A)can’t            B)mustn’t         C)shouldn’t            D)needn’t

【回答】

D

知识点：情态动词

题型：选择题