The angry boy looked at his mother and shouted out the words in his heart for many years.
A. having been hidden
B. hidden
C. hiding
D. to hide
网友回答
A. having been hidden
(答案→)B. hidden
C. hiding
D. to hide
解析：考查非谓语动词。这个愤怒的孩子看着他的母亲，喊出了藏在心中多年的话。过去分词作定语表示被动动作，根据语境可知选B。