英语 六年级 选择题 较难

must / mustn't 的用法 — 英语选择题

重庆大学版·英语 Unit 3 Public rules AI 三重审校通过

题目
Tom is at the library. He sees a sign that says "Keep quiet" and another one that says "No eating or drinking". Which sentence uses must / mustn't correctly? A. You must talk loudly here. B. You mustn't keep quiet here. C. You mustn't drink juice here. D. You must eat snacks here.