试题题干
Word Formation
Complete the following sentence with the proper form of the word in the bracket.
(shock) He’s 
at the prevalence of bribery among these officials.
参考答案
试题解析
此处缺少动词。
is是系动词，后面跟动词过去分词构成被动。所以变shock为shocked。be shocked at，对...很惊讶/震惊。
句意：他对官员中的普遍的受贿行为感到很震惊。