millie arrived out of breath because she had been to the wrong classroom.用had been had

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• millie arrived out of breath because she had been to the wrong classroom.用had been had
• David arrived out of breath at last.He told us he ___to the wrong bus station.A.had been B.had gone 为什么?????
• David arrived out of breath at last.He told us he ___to the wrong bus station.A.had been B.had gone 为什么?????
• millie arrived out of breath because she had been to the wrong classroom.用had been hadgone to和had been to的区别
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