1、Are there any restaurants in Beijing _________ authentic Mexican food?为什么要选 that serve
问题描述：
1、Are there any restaurants in Beijing _________ authentic Mexican food?为什么要选 that serve
有四个选项 还有三个是 serve；serves ; that serving
答
从句That做从句主语在这里的that 是指代前面的 restaurants in Beijing ，用作后面的从句的主语吗?