英语 九年级 选择题 标准

情态动词表建议与义务 — 英语选择题

外研社版(主编:孙有中)·英语 Unit 5 A fine balance AI 三重审校通过

题目
活动说明:参加陶艺体验不强制戴围裙,但工作人员建议戴上以免弄脏衣服。哪句话准确表达了这两层意思? A. You must wear an apron. B. You mustn't wear an apron. C. You don't have to wear an apron, but you should wear one. D. You shouldn't wear an apron.