For this case, the first thing to do is choose a verb to fill in the blank.
The verb should not be conjugated, because the conjugation of the verb is done previously in the given sentence.
The conjugation occurs specifically when they write:
"Le gusta"
The verb that we are going to choose for this case is:
"Estudiar"
Therefore, by completing the sentence we have:
A Jorge le gusta estudiar en la clase de inglés.
The translation of the sentence in English is:
Jorge likes to study in English class.
Answer:
"estudiar"
A Jorge le gusta estudiar en la clase de inglés.