英语 六年级 填空题 标准

must / mustn't 的用法 — 英语填空题

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

题目
Look at the signs in the museum. Choose must or mustn't to fill in the blanks. Visitors ______ keep quiet in the hall.(必须)They ______ touch the paintings.(禁止)Also, they ______ take photos in this room, because the sign says "No photos!".