Here are the best options to fill in the blanks:

1. A. retail
2. A. generally
3. B. difference
4. D. area
5. A. brand
6. C. sell

So the completed text would read:

A corner shop or a convenience shop is a British tradition. It is a small (1) retail shop. We can find a corner shop at the end of a local street in many neighbourhoods in towns and cities across the UK. The corner shop sells all kinds of household goods and simple food and drinks like snacks, groceries, coffee, soft drinks. It (2) generally sells newspapers, magazines, and cigarettes. Convenience stores are originally from America. They are like the British corner shops. The only (3) difference is that convenience stores are often open 24 hours. Probably the most well-known convenience store is 7-Eleven. You can find a convenience store at any residential (4) area, or alongside a busy road, a filling station, a railway station. Today, there are convenience stores all over the world. Each country has its own (5) brand of convenience stores as well as the global brand 7-Eleven. Both corner shops and convenience stores (6) sell things at higher prices than the supermarket, but they are much more convenient.

1. A. retail

   • A "retail" shop refers to a shop where goods are sold directly to consumers in small quantities.

2. A. generally

   • "Generally" means in most cases, which fits the context of the corner shop selling newspapers, magazines, and cigarettes regularly.

3. B. difference

   • The word "difference" is appropriate here as it highlights the contrast between corner shops and convenience stores.

4. D. area

   • "Area" fits the context of a residential area, where convenience stores can be found.

5. A. brand

   • "Brand" is the correct term here, referring to the identity of a specific type of convenience store, like 7-Eleven.

6. C. sell

   • "Sell" is the correct verb here, referring to what corner shops and convenience stores do with goods like those of a supermarket.

So, the answers are:

1. A. retail
2. A. generally
3. B. difference
4. D. area
5. A. brand
6. C. sell