SAT语法题,谢谢!
问题描述：
SAT语法题,谢谢!
waterways close to land（ poses ）challenges to navigation that differ greatly from those posed by the open seas.
请问括号里的哪里错了?
答
Waterways为复数名词,谓语poses不应该加S,应为pose.这一点也可以从greatly from those中的those可以看出.