The moment I got home, I found I my jacket on the playground.
A. had left
B. left
C. have left
D. was leaving
网友回答
A. had left
B. left
C. have left
D. was leaving
解析：主句动词为过去式，从句动作又早于主句动作，即过去的过去，应用过去完成式。
备考：过去完成时，即过去的过去。如：
When I got to the station, the train had left.
By the time he was twelve, Edison had began to make a living by himself.
She said (that) she had never been to Paris.