—Happy birthday, Mary!
—Thank you! It’s the best present I for．
A. should have wished
B. may have wished
C. must have wished
D. could have wished
网友回答
A. should have wished
B. may have wished
C. must have wished
(答案→)D. could have wished
解析：句意：--玛丽，生日快乐！--谢谢，这是我能够期望的最好的礼物。 使用could have done过去能够做了，should have done过去本应该做却没有，may have done过去可能做了，must have done过去一定做了，所以选D。