The appropriate forms of gustar for the given sentences are:
The first sentence talks about the preference of a single person so the correct form is "gusta" which is a singular.
Juan's name is mentioned so "gusta" is still appropriate as it represents a singular person.
The last sentence talks about two people so "gustan" is appropriate.
Find out more on using gustar at https://brainly.com/question/12722538.
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