We were extremely busy, but that is no excuse. Will you please say what settlement would be most acceptable to you?

我们虽然繁忙，但这不是理由。我们希望贵公司能将最有利于贵公司的解决办法惠告我方。

youdao

Life is very busy and extremely challenging for me now but to me, I think it's very meaningful because I am learning a lot and experiencing a lot of things!

生活是非常忙碌，非常具有挑战性，但我现在对我来说，我觉得这是非常有意义的，因为我学习了很多，经历了很多事情！

youdao

I am sorry for showing up at such limited times but I've been extremely busy, even during the Spring Festival.

我对我没能多点来社区表示抱歉，但我真的很忙，即使在我们的春节期间。

youdao

So in 2009, movies, visual effects industry was very slow, but 2010, it's extremely busy.

所以，在2009年，电影、视觉特效行业发展很慢，但是在2010年，这些行业发展得蒸蒸日上。

经济危机和电影市场 - SpeakingMax英语口语达人

Mary Hinds, the director of nursing from the Public Health Agency, said that it had been an extremely busy weekend, but the hospitals were doing their best to cope and eliminate 12-hour waits.

BBC: Increase in waits in emergency wards