The old man remained seated on the grass with his thoughts ______the faith that the boy is worth ______A.concentrated in ; adoptingB.focused on ; being adoptedC.attracted to ; to be adoptedD.concentrated on ; adopting
网友回答
D解析考查非谓语动词。第一空为with的复合结构，his thoughts与concentrate之间是被动关系，所以用过去分词，第二空为短语：值得做某事 be worth doing sth,主动表被动，根据语境选D。