问题
选择题
28．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
答案：D
考查定语从句的用法。her stay为先行词，可以理解为抽象的一段时间（她呆在那里期间），when指代her stay在定语从句中做时间状语。