这几句英语哪句是对的?

题目

这几句英语哪句是对的?
A.Hi,I was wondering if you could tell me how can I get to sherlock holmes's house?
B.Hi,I was wondering if you could tell me how I can get to sherlock holmes's house?
C.Hi,I was wondering if you could tell me how could I get to sherlock holmes's house?
D.Hi,I was wondering if you could tell me how I could get to sherlock holmes's house?
E.Hi,I was wondering if you could tell me how to get to sherlock holmes's house?

答案

A.Hi,I was wondering if you could tell me how can I get to sherlock holmes's house?
错,宾语从句,从句要用陈述句语序,can I 要变成 I can,但时态要与主句一致,故变成 I could
B.Hi,I was wondering if you could tell me how I can get to sherlock holmes's house?
错,时态要与主句一致,故变成 I could
C.Hi,I was wondering if you could tell me how could I get to sherlock holmes's house?
错,宾语从句,从句要用陈述句语序,could I 要变成 I could
D.Hi,I was wondering if you could tell me how I could get to sherlock holmes's house?
对
E.Hi,I was wondering if you could tell me how to get to sherlock holmes's house?
对,这是省略式.how i could get to ...省略成 how to get to ...