Help the ambitious (but sleepy) student plan his all-nighter by choosing the correct verb form.

By the time the sun comes up tomorrow, I _____ my ten-page essay on the history of cheese!

The correct answer is will have finished.

We use the Future Perfect (will have + past participle) to talk about an action that will be completed before a specific time in the future. The phrase "By the time the sun comes up" is the deadline!