did your father tell you when he would travel to london

题目

did your father tell you when he would travel to london
did your father tell you---------?
A why did he go to Beijing B how he goes to Shanghai C when he would travel to London D where he has spent his holiday
选c求解释

答案

很高兴能够在这里回答你的问题,这道题的正确答案应该为：
选C
主句用did来提问,为过去式
所以从句必须要用过去的时态,BD排除
从句要用陈述句语序,而A仍然是疑问句语序,所以排除
故C