题干
--Where is my watch？ I ________ find it.
--Don't worry. It must be somewhere in your room.
A：can't
B：mustn't
C：needn't
D：shouldn't
答案(点此获取答案解析）
A
--Where is my watch？ I ________ find it.
--Don't worry. It must be somewhere in your room.
A：can't
B：mustn't
C：needn't
D：shouldn't
图线，其中