She vacillated so long about attending the concert that when she decided to go, the tickets were sold out.
为是否去听音乐会踌躇了很
，
决定去时，票已售光了 。
She vacillated so long about attending the concert that when she decided to go, the tickets were sold out.
为是否去听音乐会踌躇了很，决定去时，票已售光了 。
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