Street typo joke composition

The advertisement on the window of the street retail store reads: "Our store is cheap and good, and the price is reasonable", and it also says "Our store sells all kinds of daily necessities, and the variety is particularly complete". At this time, a primary school student came home from school and found a typo on the road ("for sale" should be "retail"). So he pointed to the word "another" and said, "Uncle, this is an individual word (typo)." At this time, the owner of this retail store said, "How do you go to school, little friend?" You don't say "don't" in this word, but the word "don't" is here (just look at the word "don't" written on the window) .................