问题
选择题
_______ confidence and patience, they failed to settle the difficult problem.
A.Lack in
B.Lacking of
C.Lacking
D.Having lacked
答案
答案:C
题目分析:句意:因为缺乏自信,他们没能解决这个困难的问题。这里需要非谓语动词做状语,they和lack是主动关系,用现在分词做状语,排除A。B项如果接of,lack是名词,D项表示先后关心,这里没有,选C。