问题
选择题
The old man remained seated on the grass with his thoughts ________ the faith that the boy is worth ________ .
A．concentrated in ; adopting
B．focused on ; being adopted
C．attracted to ; to be adopted
D．concentrated on ; adopting
答案
答案：D
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。