题目内容
广西南宁市2011年高中毕业班第二次适应性测试
It has been announced that passengers open their seatbelts until the plane has landed.
A.mustn’t B.won’t C.needn’t D.might not
A
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题目内容
广西南宁市2011年高中毕业班第二次适应性测试
It has been announced that passengers open their seatbelts until the plane has landed.
A.mustn’t B.won’t C.needn’t D.might not
A