请英文好的朋友帮助修改一下英文小短文.

请英文好的朋友帮助修改一下英文小短文.
Nowadays,with rapid urbanization,expertspredict that 50% of people live in cities.It is predicted that the statisticwill increase to 70% by 2050.
Although there are many slum areas whichcan't even provide a healthy environment with facilities like drinking waterand sanitation,the size of urbanisation in developing countries areunprecedented.
Compared to rural areas,the infrastructureand services are quite good in urban areas,which has caused a significantpercentage of the population migrated from rural areas to urban areas to seekbetter job opportunity and living standards.A lot of cities have becomemegacities with the proportion of more than 10 million.The most significantpopulation soars are London,Shanghai,Tokyo and such.
According to statistics,10% of world’spopulation live in megacities.This has caused serious issues such as trafficjam and environmental pollution.
In conclusion,megacities are one of themajor issues of the 21st century.

Nowadays, with rapid urbanization, (是已知不用推测experts predict that 应改为according to the experts, now there are) 50% of people live(要用living) in cities. It is predicted that the statistic will increase to 70% by 2050.

Although there are many slum areas which can't even provide a healthy environment with facilities like drinking water and sanitation, the size of urbanisation in developing countries are unprecedented.

Compared to rural areas, the infrastructure and services are (quite good 应改为far better或much better) in urban areas, which has caused a significant percentage of the population migrated from rural areas to urban areas to seek better job opportunity(要用复数opportunities) and living standards. A lot of cities have become mega cities with the proportion(应该是population) of more than 10 million. The most significant population soars are London, Shanghai, Tokyo and (such应改为 many other similiar size cities).

According to statistics, 10% of world’s population (live应改为are now living) in mega cities. This has caused serious issues such as traffic jam and environmental pollution.

In conclusion, mega cities are one of the major issues of the 21st century.

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