He spends 3 hours surfing the internet every day.
It takes him 3 hours to surf the internet every day.
It costs him 3 hours to surf the internet every day.
估计是为了考时间的三种表达方法吧,
这个考的是 花费的时间做某事的三种表达法!第一个是 spends on.第二个 spends surfing 第三个 takes to surf the internet