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【翻译】汤姆花了好几天时间才弄清楚到底发生了什么事。(figure out)

时间：2021-07-18 12:45 关键词：土木工程专升本大学英语2 20级《大学英语二》期末考试（镇江上元）哈尔滨师范大学大学外语2 平时作业1

答案解析

It took Tom a couple of days to figure out what had happened.
It took Tom a couple of days to figure out what had happened.

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