The answer is an envelope. It contains a letter.
Envelope is a noun.
It does
We dig, dig, dig, dig, dig, dig, dig, in our mine the whole day through. We dig, dig, dig, dig, dig, dig, dig, it's what we like to do. It ain't no trick to get rich quick. When you dig, dig, dig, with a shovel or a pick. In a mine. In a mine. In a mine. In a mine. Where a million diamonds shine! We dig, dig, dig, dig, dig, dig, dig, from morning until night. We dig, dig, dig, dig, dig, dig, dig, ... We dig up diamonds by the score! A hundred rubies sometimes more! But we don't know what we dig them for, just dig, dig, dig-a, dig, dig. Heigh-ho! Heigh-ho! Heigh-ho! Heigh-ho! heigh-ho! Heigh-ho, heigh-ho, it's home from work we go. (Whistled melody) Heigh-ho, heigh-ho, heigh-ho, heigh-ho, heigh-ho. :)
The word is "envelope" (which usually holds only one letter).
on the envelope.
This envelope is like the window envelope,but the window opening is uncovered (an uncovered address panel).
The prepositional phrase in the sentence is "on the envelope".
The possessive form for the noun envelope is envelope's.Example: The envelope's flap wasn't sealed.
When sending a wedding invitation the response card should go into the response envelope and you should address it back to you on the front of the response envelope with a stamp on the envelope.
Envelopes is correct.
I opened the envelope that contained my check.