In the following sentence, what type of verb is the bolded word? The crowd became restless while waiting for the concert to begin.

Im pretty sure the bolded verb is restless

The verb "became" is a linking verb.

Explanation:

The bolded word in the sentence above is became;

Became, as used in the sentence acts as a linking verb.

A verb is said to be a linking verb if it describes the subject by connecting it to a predicate adjective or predicate noun.

Here, the verb "became" describes the crowd as being restless and it also linked their restlessness to their waiting for the commencement of a concert.

So, "became" as used in the above sentence and also going by the description above, the very is used as a linking verb.