试题题干
WORD FORMATION
Complete the following sentence with the proper form of the word in the bracket.
(efficient) Although examinations do the job quite 
, their side effects are also enormous.
参考答案
试题解析
do是动词，需要副词修饰。变efficient为副词。
句意：虽然考试起了很有效的作用，但他们的副作用也是巨大的。