Mary said to me,"Had I seen your bag,I _____ it to you."

题目

Mary said to me,"Had I seen your bag,I _____ it to you."
A.will return B.must return C.could return D.would have returned
四选一

答案

D.would have returned 我见过你的包吗,我可能已经还给你了.虚拟语气.