It is written clearly in the requirements that all passengers check onto board thirty min
It is written clearly in the requirements that all passengers check onto board thirty min
发布时间：2020-08-16 18:35:31
It is written clearly in the requirements that all passengers check onto board thirty minutes before the plane takes off． A. may B. can C. will D. shall
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A. may B. can C. will (答案→)D. shall 解析：四个选项分别表示可以、能、将要和应该，根据题意选D，要求中清晰地写明了，飞机起飞前三十分钟，所有乘客都应该检查后登机。