Future Perfect Tense

I ________ by then.

• will be leave

• will have left

• will leaving

• will left

Melissa and Mike will be exhausted. They ________ slept for 24 hours.

Will you ________ by 8am?

• have arrived

• be arrive

• have arriving

• has arrived

Where ________ gone? (she)

I will let you in. I ________ with the keys by the time you come in.

• will have arrived

• will be arrival

• will be arrived

• will arrive