Fill in the Blanks (Reading & Writing)

Snow removal in cities requires careful —coordinationcoordinatecoordinatingcoordinated of ploughing schedules, salt distribution, and temporary parking bans to keep roads passable. Municipal crews often —prioritiseprioritisingprioritisedpriority priority routes, such as those serving hospitals, before clearing residential streets. Excessive use of road salt, however, can —contaminatecontaminatingcontaminatedcontamination nearby waterways, prompting some cities to trial less —corrosivecorrodecorrosioncorroding alternatives like sand or beet juice.