【题目】Because of the financial crisis, days are gone ______ local 5-star hotels charged 6,000 yuan for one night.
A.if
B.which
C.since
D.when

【答案】D
【解析】句意：由于金融危机，当地 5五星酒店一晚收费6000 元的日子没有了。______ local 5-star hotels charged 6,000 yuan for one night是分割定语从句修饰days，在从句中做时间状语用when ，故选D。