试题题干
WORD FORMATION
Complete each of the following sentences with the proper form of the word in brackets.
(office) The report has not yet revealed 
corruption in relation to road building.
参考答案
试题解析
空格前是及物动词reveal，后面是名词 corruption，所以这里需要填一个形容词修饰名词或者填一个名词构成名词短语。根据句意选填形容词 official：官方的；正式的；公务的。
句意：该报告还没有披露与筑路有关的官方腐败行为。