Question

【题目】In recent years, the prices of houses in big cities have ______ a lot, so it is more difficult for young people to afford one there. (rise)

Answer 1

【答案】risen

【解析】

句意：近年来，大城市的房价上涨了很多，所以年轻人很难在那里买到房子。

根据“have”可知是现在完成时，结合所给单词，可推测出此处是缺过去分词“risen”，故答案为risen。