试题题干
Word Formation
Complete the following sentence with the proper form of the word in the bracket.
(complete) In his life, each stage of his development depends on the satisfactory 
of the one before.
参考答案
试题解析
此处缺少名词。
satisfactory为形容词，形容词修饰名词，横线处需要名词，-tion名词后缀。所以变complete为名词completion。
句意：在他的一生中，每一个发展阶段都基于前一阶段的圆满结束。