a.attentionb.effortsc.troublesd.cares

熱心網友

b.efforts努力句子可還原為：It is reported that great made to look into the case have paid off.其中 在that從句中作主語，made to look into the case做后置定語修飾，它可改為定語從句－－－...which were made to look into the case...換句話說 make 和efforts是搭配在一起的，構成詞組make great efforts to do sth,其他幾個選項都不和make搭配。句意：據報道，對該案件調查巨大努力已經有了結果。

熱心網友

i think Zhaorentao2005's answer is the best, take it, you won't regret.

熱心網友

B 正確 make great efforts 做出的努力據報道,調查這件事所做出的努力值得

熱心網友

make great efforts to 花巨大的努力pay attention to

熱心網友

A

熱心網友

b.efforts努力據報道，經過巨大的努力，對該案的調查已經有了結果．因為調查需要的是努力，而不是Ａ的注意力，ＣＤ更離題．由于沒有上下文，對case的翻譯無從把握，呵呵．