It’s common sense that in summer people like to seek shade the air is cooler.A. in where B

问题补充：

It’s common sense that in summer people like to seek shade the air is cooler.

A. in where

B. in which

C. where

D. the place where

答案：

A. in where

B. in which

(答案→)C. where

D. the place where

解析：考察定语从句。本题定语从句的先行词是shade，后面的定语从句句子结构很完整，故使用关系副词where引导起这个定语从句，在句中作状语。句意：在夏天人们喜欢寻找阴凉处，在那里空气更凉快。故C正确。