You have made a promise to go with me to Nanjing. So why aren’t you getting ready?

问题补充：

--- You have made a promise to go with me to Nanjing. So why aren’t you getting ready?

--- But I that you wanted me to start at once.

A. haven’t realized

B. hadn’t realized

C. didn’t realize

D. don’t realize

答案：

A. haven’t realized

B. hadn’t realized

(答案→)C. didn’t realize

D. don’t realize

解析：考查时态：句意：--你答应和我去南京的。你怎么不准备好？--但是我没有意识到你让我那么早出发。说明是过去没有意识到那么早走，现在已经知道了。用一般过去式。选C。