He was working very hard last year, passing the test successfully.
去年他一直努力学习，顺利通过了这个测试。
He was not a very hard-working student when he was young.
他年轻时不是一个很用功的学生。
He worked very hard to find out what exactly was wrong with my kidneys and why they weren't working.
他做了很大的努力来查明我的肾到底怎么了，为什么不工作。
The broom went up and down the steps. It was working very hard! Slowly, the tub grew full. The boy was watching the broom. He was thinking about the jobs the broom could do.
扫把在阶梯爬上爬下，卖力地工作！慢慢地，浴缸就满了。小伙子看着这支扫把，同时在想它还能做些什么。
One day he saw a farmer working in the field. The farmer was working very hard under the hot sun.
一天，他看到一位农民叔叔在炎热的天气下地干活儿。
He was very good at studying even he was not working hard so we called him really smart boy.
他学习成绩很好，即使他学习并不努力，所以我们都觉得他很聪明。
He was very good at studying even he was not working hard so we called him really smart boy.
他学习成绩很好，即使他学习并不努力，所以我们都觉得他很聪明。
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