Read the text about public transport in Russia and complete it with the words below.

Write one word in each gap.

to, has, the, a, as

Electric buses have been introduced in several Russian cities [ ] part of the Safe and Quality Roads national project. This modernisation of public transport is intended to improve air quality, as transport is one of the main sources of pollution. In 2021, it accounted for 23% of emissions into the atmosphere. Transport plays [ ] major role in this (97%).

[ ] greatest environmental impact from traffic comes from large cities. This is why many of them choose public transport which is less harmful to the environment. One of the cities where electric transport is actively developing is Moscow. In 2022, there were 1,050 electric buses in the city. In addition, gas-powered vehicles, which run on natural gas, are becoming increasingly popular due to their environmental and economic benefits. The number of these vehicles [ ] increased in recent years in Russia. For example, in 2023, there were about 260 thousand gas-powered vehicles in the country. This number will increase if the number of gas stations increases.

All this will make it possible [ ] reduce pollutant emissions into the atmosphere.