—What made little Tony so unhappy and cry in his room?
— to go hiking with his brother.
A. Having not been allowed
B. Not having allowed
C. Having not allowed
D. Not having been allowed
网友回答
A. Having not been allowed
B. Not having allowed
C. Having not allowed
(答案→)D. Not having been allowed
解析：考查非谓语动词。本题考查动名词短语作主语，根据句意可知是“没有被允许”，故用被动语态。句意：——什么使得小托尼不开心，在房间里哭呢？——没有允许和他哥哥一起去徒步旅行。故D正确。