ThesmallmountainvillagewespentourholidaylastmonthliesinisnowpartofHubei.
A.which whereB.where, whatC.that , whichD.when , which在线课程B
解析：
关系副词where引导限制性定语从句，修饰先行词the small mountain village, 在从句中作状语，表语从句中缺少主语，用what引导。 what="the" place that故选B。