题目内容：

Do tell your teacher all the truth.She appears ______everything.
A.to tell
B.to be told
C.to be telling
D.to have been told

优质解答

D
已经被告知
被动语态的现在完成时态
be done 变为 have been done
务必告诉你老师所有的事实.她看起来已经被人告知了全部事情.（意思是,你别骗她,她会知道的,因为已经有人告诉她了）