正确用英语造句？

1、It's good for you to learn English.学英语对你有好处 2、It’s very dangerous for children to cross the busy street.对孩子们来说，穿过繁忙的街道很危险。3、It’s difficult for us to finish the work.对我们来说，完成这项工作很困难。4、 It’s very important for you to ...