Do let your mother know all the truth. She appears everything.
A. to tell
B. to be told
C. to be telling
D. to have been told
网友回答
A. to tell
B. to be told
C. to be telling
(答案→)D. to have been told
解析：考查不定式做宾语，句意：让你的母亲知道所有的事实吧。他似乎已经被告知了一切。根据句意不定式的动作发生在谓语动词之前，故不定式用完成时态。选D。