定语从句 关系副词 / 介词+关系代词 / 关系代词whose 练习一 填上适当的 关系副词when/where/why,并把它写用两个简单句,注意介词的选择。1It is a place _where_ an astronaut works and lives 句1:It is a place .句2:An astronaut works and lives in the place.2It was the day _ I was sent into the sky句1: 句2: 3Can you tell me the reason_ you are taking pictures?句1: 句2: