In this exercise, you'll see input verbs and model verbs. If you choose ring as your model verb, and then bring as your input verb, bring will conjugate the way that ring normally does.

When the subject of a sentence isn't doing something, the verb is passive. On the other hand, a sentence is active when the subject performs the verb (action). For example, in this sentence the ...

Express one idea per sentence. Use your current topic — that is, what you are writing about — as the grammatical subject of your sentence (see Verbs: Choosing between active and passive voice).