单选题
Changing jobs is not easy, particularly if the circumstances in ________you’re leaving are less than ideal.
【正确答案】
A
【答案解析】本题考查定语从句的用法。when、where、why在引导定语从句时，根据语境，when可替换为in／at／on which，where可替换为at／in which，why可替换为for which。题干中circumstances作先行词，其关系词可用where或in which，故本题答案为A)。