It takes about two hours for John to do his homewo

问题补充：

It takes about two hours for John to do his homework every day.takes改为“costs”行吗

答案：

不行的,take一般表达时间上的花费

而cost表达的是金钱上的浪费

======以下答案可供参考======

供参考答案1:

不行供参考答案2:

不行take主语是人

cost主语是物