The announcement______greatly distressed the waiting passengers.A．that all flights were ca
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The announcement______greatly distressed the waiting passengers.
A．that all flights were cancelled
B．why all flights were cancelled
C．which all flights were cancelled
D．of which all flights were cancelled
请帮忙给出正确答案和分析，谢谢！
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正确答案：A
同位语从句题。本题已有的成分句子结构已很完整，缺少的部分可以是定语从句或同位语从句，“航班被取消”是宣布的具体内容，是对announcement的具体说明，因此应选[A]。