题干
---Must I practice the violin now ,mom?
---No, you .You can go out for a walk.
A：mustn't
B：shouldn't
C：can't
D：needn't
答案(点此获取答案解析）
D
---Must I practice the violin now ,mom?
---No, you .You can go out for a walk.
A：mustn't
B：shouldn't
C：can't
D：needn't
