题目内容
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
【答案】
D
【解析】略
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题目内容
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
D
【解析】略