Answer :
Too much cleaning up this word group from the sentence is an infinitive phrase.
What is an infinitive phrase ?
An infinitive phrase is a group of words that uses an infinitive (“to” + verb). An infinitive is a verbal (a word that expresses action); so, an infinitive phrase has the same role of expressing action in a sentence.
For example: To plant a garden In this phrase the infinitive phrase is too much cleaning up.
The infinitive form of a verb is occasionally used as a noun rather than as a regular verb. Making the infinitive the sentence's subject or object accomplishes this. She likes to run, for instance. The verb "she likes" in this instance has the object "to run" in the infinitive form.
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