make the grade造句

1、It takes hard study to make the grade in school.
在学校必须努力用功才会有好成绩。

2、It took him a lot of hard work to make the grade in business.
他经过艰苦努力，终于在生意上获得了成功。

3、It took him a lot of hard work to make the grade in business
他经过艰苦努力，终于在生意上获得了成功。