把下列句子合并为一句.5.Why did you change your job Mum asked.
问题描述：
把下列句子合并为一句.5.Why did you change your job Mum asked.
答
Mum asked why I had changed my job.
应该用I had changed，因为妈妈问之前我已经换了工作。
答
Mum asked the reason that I changed my job/
答
Mum asked me why I changed my job.
妈妈问我为什么换了工作.
望采纳,祝开心~!