It’s that the boy break away from the bad habit of sleeping at class.
A. said
B. suggested
C. known
D. reported
网友回答
A. said
(答案→)B. suggested
C. known
D. reported
解析：考查。句意：据建议那个男孩应该改掉上课睡觉的坏习惯。It is said 据说，it is suggested 据建议 it is known大家都知道，it is reported 据报道，根据句意本文关键词break away，没有人称和数的变化，是省略了should，所以是据建议的虚拟语气，所以B 正确。