Yes, you are correct. The verb in the sentence "the girl is very pretty" is "is." The verb "is" is a form of the verb "to be" and is used to express a state of being or existence. In this sentence, it shows the relationship between the subject "the girl" and the adjective "pretty" to describe her. To identify the verb in a sentence, it is helpful to look for the action or state of being that the sentence is conveying.