帮我看看这句英语有语法错误吗？高分啊！

Question

With the development of economy and society, sustained social progress and continuous improvement of people's living standard, competition is increasingly fierce.
我是想问！一共前面有3个分句，前两个包括一个用and连接的句子里都没有谓语，和后面这句话有整体结构上有问题吗？

Answer 1

我个人觉得with后面如果能连接三个并列名词形式更为妥当一点
With the development of economy,society's sustaining social progress and continuous improvement of people's living standard,competition is increasingly fierce.

Answer 2

最后一句里的increasingly fierce改成becoming more and more fiercely.

个人意见。

Answer 3

continuoued fiercely