UNIT 10
I
1.purification
2.treatment
3.environmental
4.contamination
5.sustainable
6.assessments
7.fertilize
8.desinfection
9.sendimentation
10.pollution
II
1.remediation
2.managenent
3.recycled
4.habitat
5.fuel
III
B,E,A,D,C
IV
1.the pipes had checked by him the day
2.would change the filters the following week
3.if I added chlorine to the water
4.I was going that day
5.wheter he could repair the sewage pipe that week
6.I didn’t use this machine then
7.asked him to checked the water pressure
8.agreed that he would write the report
9.offered to help me\\he offered that he would help me
10.reminded Mike didn’t forget to close off
11.me for he had shouted at me
12.suggested meeting at two o’clock
13.thanked me for
14.admitted that they had broken
15.complained to me about my being lazy