Some people think the best way to solve traffic congestions in cities is to provide free public transport 24 hours a day, 7 days a week.
To what extent do you agree or disagree?
这篇议论文比较简单，只是讨论一下交通拥堵的解决办法。但是，考生们要注意审题，出现the best, the only这些字眼的，在逻辑上通常是不能完全肯定的。另外，反对the best way的时候，最好给出其它的有效的解决办法。
Body 1: 这个方法的好处：吸引更多乘客，减少私家车数量。
Body 2: 坏处：公交系统服务质量不高，政府浪费大量财力，增加人民税收负担。
Body 3: 其它解决办法。
The solutions to the pressing issue of traffic congestions, especially in metropolis, have been a frequent topic of discussion. However, 24/7 free public transport service would not tackle this issue; therefore, other effective measures would be in great need.
Theoretically, providing 24/7 free public transport, like underground and bus, could produce some positive outcomes, among which stands out convenience. This means that commuters could travel by any mode of public transport at any time. Moreover, it is free of charge, which might slightly ease the financial burden on the poor or people of middle class. Certainly, this would attract more public transport users,so the number of private cars may be reduced considerably.
However, this approach would exert more negative outcomes if it is carried out. One main disadvantage is the low-quality public service. By making it free of charge, public transport service would, of course, degrade to a certain degree, since the vehicle will be crowded and even suffocating.. Another problem is that few people would use public transport at late night or in the very early morning; this would be a great waste in terms of public funds. Undoubtedly, people's financial burden would be heavier.
To solve traffic gridlock, we need to implement reasonable city road plan. It is true that some traffic jam is caused by inappropriate city road plan and construction. Thanks to high technology, it is also possible to install CCTV to make traffic forecast to drivers. Other strategies could exert significant effects, too, such as controlling and improving signal timing and restricting peak-hour curbside park.
In conclusion, 24/7 free public transport would not be an effective measure to resolve traffic congestion in the long term; hence other strategies need to be implemented at the same time.
A pressing issue 一个迫切的问题
Address/ tackle/ resolve/ the problem
24/7 service 全天24小时，一个星期每天的服务;在英国，可以用round-the-clock service
执行,实施：carry out; implement