A-A+ The discount houses were first established in 2022-08-06 17:22:47 问答库 阅读 180 次 问题详情 The discount houses were first established in that period of time ________ people‘s purchasing power was low. A. which B. that C. when D. where 请帮忙给出正确答案和分析,谢谢! 参考答案 正确答案:C