选 A,decide to do sth 决定去做什么 B.makes a decision of doing sth,he makes a decision of working hard. C.makes up his mind to do sth.he makes his mind to work hard. D.显出很大的兴趣,对此题不合.
选A,句子意思是:在经历了这么多失败后,他决定努力工作。 因为work hard 在该句子中用表示努力工作的动作,所以它的前面应该加介词短语,如:decide to 、make a decision to、make up one's mind to等,B和C选项中都没有介词To 所以不能用,而D选项先不讨论词义,光是搭配就不对,show great interest in doing st...