74.Alice has gone to the classroom and she didn’t say ________.

问题描述:

74.Alice has gone to the classroom and she didn’t say ________.
  A. when did she come backC. when would she be back
  C. when she came backD. when she would be back
在纠结C,D,不知道是哪个,我跟偏向D,请解释一下,谢谢

选D
A翻译出来效果是这样的:
爱丽丝已经去教室了,他没说他什么时候回来的(时态混乱)
B根本就是语序错误
C语法错误加上时态混乱.
D是对的