Considering the incomplete sentence in the question, to make the sentence complete, we have "My mom suggested to keep the surroundings clean and green."
The word "to" is a preposition. It is used to express a situation approaching a specific condition.
Here, the preposition "to" is used to describe the condition in which the surroundings must reach.
The word "to" can also serve as an adverb or incentive marker.
Hence, in this case, it is concluded that the complete and correct sentence is "My mom suggested to keep the surroundings clean and green."
Learn more here: https://brainly.com/question/10595540
