__________ are helping verbs when they are used with another verb in a sentence.

Go, Write, Eat

To, Of, In

Be, Do, Have

Bat, Building, Room

Be, Do, and Have function as helping (auxiliary) verbs when used with main verbs in a sentence.

Examples: She is going home, They do play well, I have eaten lunch.

Words like am, is, are, was, were, being, been, will be are examples of Helping Verbs.