MISSING MONDAY: ACTIVE TO PASSIVE

Happy Monday, everyone! I hope that your week is off to a great start. 

For today's Missing Monday, we are challenging you to change an ACTIVE sentence into a PASSIVE sentence. Can you change the sentence below into its PASSIVE form?

Sentence 1: By 9 pm, he will have swept the floors. 

Notice that this sentence is in the FUTURE PERFECT. 

Give us your best guess on our Facebook page and we will post the answer later.

https://www.facebook.com/ZigguratEscuelaCorporativadeIdiomas

Good luck, and thanks for participating!