Rewrite each sentence, using active verbs. Eyeglasses with bifocal lenses were invented by Benjamin Franklin.

Benjamin Franklin invented eyeglasses with bifocal lenses.

To rewrite the given sentence using active verbs, we need to change the sentence structure to have an active subject performing the action. Here's the revised sentence:

- Benjamin Franklin invented eyeglasses with bifocal lenses.

Benjamin Franklin invented eyeglasses with bifocal lenses.