Step 1: Identify the structure of the sentence.}
The sentence is: Every child is free to grow.
Step 2: Understanding the infinitive.
An infinitive is the base form of a verb, preceded by the word "to." In this sentence, the verb "grow" is in its base form and is preceded by "to," which makes it an infinitive.
Step 3: Identify the infinitive.}
The infinitive in this sentence is: to grow. The infinitive in the sentence is to grow.
Fill in the blank with the proper form of the verb as per the subject:
The hermit to the king.