He ______ football regularly for many years when he was young.A.was playingB.playedC.has playedD.had played
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B解析本题考查动词的时态。句中when he was young是时间状语从句，从这个时间状语确定主句的动作应该是发生在过去的，所以排除C、D，D项是过去完成时，所表示的动作应该发生在过去的过去；再根据介词短语for many years判断主句的动作应是在过去某段时间内经常或习惯性的动作，故应选一般过去时。