问题
选择题
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
答案
答案：C
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。