the yellow river is the second longest river in China,___more than ten bridges have been built
问题描述：
the yellow river is the second longest river in China,___more than ten bridges have been built
答
the yellow river is the second longest river in China,_which__more than ten bridges have been built还要有一个介词！！in which为什么不用after而用in？？黄河是中国第二大河流，在它那里已经有超过10座桥梁被建在黄河上。in which= in the yellow riverafter 在.....之后