求when/after的用法
In 2003,_______Professor Dorrity and his wife retired,they came to Wuhan and started to work as volunteers at the Welfare Institute.(这里为什么填when/after)
人气：436 ℃ 时间：2020-04-10 20:12:01
解答
when/after Professor Dorrity and his wife retired,
when/afterg带出状语从句,表示时间.
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