We didn'tknow --with the girl A what worng is B.what worng w

选:C.what was wrong
句意:我们不知道那个女孩怎么了.
We didn't know 后是一个宾语从句,宾从中用陈述语序,
而what was wrong with the girl 本身就是陈述语序,因为what在宾从中作主语,
关键要根据主句的时态来决定宾从的时态.
didn't know 为一般过去时,故宾从中也要用过去时态.
因此选C 不能选D.
注:worng 应为wrong .