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Friends,we'llgraduatefrommiddleschool.Weshouldn'tforgetthedayswespentwithclassmates.Yesh,withoutfriends,onecan'tbehappy.AthatBwhenCwho

题目详情
Friends,we'll graduate from middle school.We shouldn't forget the days_____we spent with classmates.
Yesh,without friends,one can't be happy.
A that B when C who
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答案和解析
A 嗯,that可以作为spent的宾语,所以是定语从句,而when只能引导从句,who你肯定知道的,是指人,而这里只是描述days,所以不能选.