✔ 最佳答案
A little bit clumsy and repetitive.
Try :
To conclude, I maintain that if nothing is done to address the above-mentioned matters, the situation will only worsen. Therefore, we must take action to tackle them immediately.
It is of crucial signficance for the government to take a multi-pronged approach when dealing with the problems. Cooperation between the government and the public is also essential to achieve a successful and prompt solution.