英语 八年级 填空题 较难 ★ 精品

情态动词must表必须 — 英语填空题

译林版·英语(初中) Unit 8 Safe and sound AI 三重审校通过

题目
At a school science fair, visitors may enter the laser room only when wearing safety glasses. Complete the rule with one word beginning with m that means “必须”: Visitors ___ wear safety glasses before entering the laser room.