Whatever your parents you 一there is real Santa Claus. And I should know, because I’ve seen him myself !
A. may tell
B. could tell
C. may have told
D. must have told
网友回答
A. may tell
B. could tell
(答案→)C. may have told
D. must have told
解析：句意：不管你们的父母曾经是怎么告诉你们的——总之，真的是以圣诞老人。我当然知道，因为我曾亲肯见到过他。表示对过去可能性进行推测。而非肯定推测，故用may have done结构。