【题目】Children, if well ________, are not likely to make any trouble in public places.
A. having educated B. educating
C. to be educated D. educated
在线课程【答案】D
【解析】考查过去分词。句意：如果受到良好的教育，孩子不可能在公共场所惹麻烦。句子主语Children和educate之间是被动关系，此处省略了相同的主语和be动词，是if+过去分词做条件状语，故选D。