Is the river( )though the town very long?A.flows B.that flows C.which flow D.the one that flows

题目

Is the river( )though the town very long?A.flows B.that flows C.which flow D.the one that flows
请高手详细解释为什么不选D而选B

答案

这是一个主从复合句.主句为：Is the river very long?其中that flows through the town为定于从句修饰the river.此句可翻译为：穿过城镇的这条河流非常长吗?要想选D,可把此题改为：Is the river the one that flows ...