单选题
Cities have nonprofit associations, usually made up of Fire Department personnel working on their own time to provide________inspections.
【正确答案】
D
【答案解析】修饰顺序题。空格后是名词inspections，而fire-safety inspection是比较常见的搭配，表示“消防安全检查”。home后应紧跟fire-safety inspections，home用于限定消防安全检查的区域，即仅限于家庭范围内。free可以对家庭消防安全检查的性质进行界定，即“免费的”。故D为答案。