As a result of the fog haze weather, nowadays many people are longing to live the air is fresher.
A. that
B. when
C. where
D. in which
网友回答
A. that
B. when
(答案→)C. where
D. in which
解析：考察状语从句。本题中的状语从句where the air is fresher，是用来修饰动词live的。句意：因为雾霾天气，现在很多人都期待着住在空气新鲜的对方。That不能引导状语从句，B项的句意和上下文不符。D项是短语从句，缺少先行词。故C正确。