I’ll never forget the days when I spent with you in Hangzhou. A B C DBwhen—that/which

发布时间：2020-08-17 13:55:00

I’ll never forget the days when I spent with you in Hangzhou.
A                B        C          DB when—that/which 

网友回答

(答案→)B when—that/which 
解析：这是一个定语从句,从句中没有宾语,先行词为时间(物).
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