(Delay)________for two hours ,the train finally pulled into the station.

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(Delay)________for two hours ,the train finally pulled into the station.

(Delay)________for two hours ,the train finally pulled into the station.
(Delay)________for two hours ,the train finally pulled into the station.

(Delay)________for two hours ,the train finally pulled into the station.
填Having been delayed
因为是for加一段时间 所以用完成时态
train应该是被被延误 所以用的被动

Having delayed