译林版·英语(高中) Unit 1 Honesty and responsibility AI 三重审校通过
题目
根据句意,在空格处填入一个最恰当的情态动词(每空一词)。1. All passengers ___ keep their seatbelts fastened during takeoff—it is required by aviation law. 2. She___be at the library, for I saw her enter it just a minute ago.