Chia động từ trong ngoặc: The raw sewrage is.........(chemist) treated

The raw sewrage is.........(chemist)treated
"Is there any .............( oppose) to the idea of building a new swimming ?" asked the school principal
My brother is an............(educate) psychologist.
There are no significant............(differ )between the education systems of the two countries
The electricity industry..............(consumption ) large amounts of fossil fuels