1、当2个句子满足以下2个条件：1、2个句子主语一致,即此题都是he；2、从句里是由be动词做谓语.那么,那个从句就可以省略主语及be动词,直接保留be动词后的成分即可,可以是形容词,分词短语等.省纪委省略,he is buried in thought.若选B,则为he is being buried in thought
2、选reported,
本意：
A,formally announce (sth); make known clearly 正式宣布（某事）; 表明
B make (sth) known publicly 宣布; 宣告; 发表,强调公开,比如:They announced their engagem ent to the family.他们向家里宣布他们已经订婚了
C,permanent account,esp in writing,of facts,events,etc （对事实﹑ 事件等的）记录;
（尤指）记载,如a record of school road accidents 学生出席﹑ 交通事故记录
D,give a spoken or written account of (sth heard,seen,done,studied,etc);
describe （以口头或书面形式）报告或报道（所闻﹑ 所见﹑ 所做﹑ 研究所得等）;
正对此意
当年我也错过,