Susan A(together with) her husband and B(two sons) C(are) to arrive D(on) the evening fl

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Susan, A(together with) her husband and B(two sons), C(are) to arrive D(on) the evening flight.

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗