10,HE was disappointed to find his suggestion 选什么详解谢谢
B 和 C的语法都没问题但是联系前文的意思是,他发现自己的建议被拒绝,感到很失望,这个be adj. to do 结构的to do 不定式此时是表示结果,是已经发生的动作 这样就好区分了,过去分词作后置定语,意思是指已发生的动作,或目前的状态;而to do 不定式作后置定语是指将要发生的动作所以选B动词不定式,作宾语补足语,在c,d 中选,根据题意应该是被动,因此选CCfind后跟动词不定式: C, Dsuggestion 是被决绝的,用被动语态,所以答案: C翻译: 发现他的建议被决绝了,他很失望Bfind属于感官动词,与see, hear等动词用法一样find sb. doing(主动,发觉某人正在做某事)find sb. do(主动,发觉某人做某事的完整过程)find sth. done(被动,发现某物被……)find his suggestion turned down发觉他的建议被拒绝你好!B find sth. done = find that sth. has been doneHe .... to find his suggestion turned down = ... to find that his suggestion has been turned down.如果对你有帮助,望采纳。A