Question

She’ll never forget her stay there _______ she found her son who had gone missing two years before

She’ll never forget her stay there _______ she found her son who had gone missing two years before.
A. that B. which C. where D. when
答案是D,感觉是C，不知道为什么

Answer 1

有时间状语

Answer 2

这道题选D，意思是她永远不会忘记她在那的那段时间
由forget her stay ,her为形容词,后接名词,故her stay为名词词组,stay作名词时意为一段时间.
且后面的从句是一条完整的句子,不缺成分，所以所欠的只有状语.那么,只剩时间状语when和地点状语where,又由stay的意思（一段时间）知选D.

Answer 3

选D。=。=

Answer 4

b