quarts
drop, bore, to, be... no word contains all of these letters.
April is the name of the month that "contains" the letter q. If you look at the alphebet, q falls between p and r. April is the only month that contains these 2 letters next to each other.
Sobriquet
The longest word is 7 letters: wipeout
A seven letter word using the letters would be: virtual.