同学你好，该知识点来自沪江网校《新标日中级上下册精讲连读【随到随学班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学好，
The company has responded to taken up the challenge of recruiting across the EU.
- 这里应该用take up, 主语是the company,  the company 和 take up the challenge的关系是主动的，公司接受挑战。

We performed carried out a lot of tests before we launched this product on the market.
- perform sth, 请看字典解释：做，进行；施行, 所以应该填carrying out,
https://dictionary.cambridge.org/dictionary/english-chinese-simplified/perform

The first stage of the project went well, and we're now developing taking forward our plans for the next stage.
develop + sth, https://dictionary.cambridge.org/dictionary/english-chinese-simplified/develop

黑体的词组不是改变时态， 是动词和后面的搭配， 有的动词+sth/doing,  有的动词+to do, 是固定搭配，需要积累。同学可以搜一下，网上有相关动词的总结。

学习愉快！