and, but, or; in, on, atShe encouraged a sense of community by p

and, but, or; in, on, at
She encouraged a sense of community by promoting education ______services for people ______ need.
【正确答案】：and/in
【题目解析】：And表并列的连词，意为“和；与；同”， 常用来连接表示对等成分的单词、短语或者句子。In need“贫困的；困难中的”。