Easy enough. One sentence, five word minimum. Feel free to go well past the minimum, but no less. The sentence needs to actually make sense. We'll start at B and go through the alphabet then 'round back again. Start! Bargain basement baseballs bounce briefly.
Edit in: Just realized I missed 'X' Xenophobic, Xaviar x-rayed Xemar's xenial xophiles. (Cheat confession: Doing "X" required the assistance of google.) Yesterday, Yang yanked your yarn yards.
I know I shouldn't go twice, but nobody likes doing "Z" anyway. (Edit: Three times, I added "X" to above post, which I missed.) Zealous zany zebras zeroed zoo zones. If you really wanted to do "Z" yell at me and I'll edit it away.