Here’s a logical order for the sentences (1-8) to form a coherent passage about Coca-Cola:

1. C. Coca-Cola was originally invented by John Pemberton, a pharmacist in Atlanta, Georgia. In 1886, he created a new kind of medicine to cure tiredness and headaches.

2. H. It tasted so revolting that just about no one wanted to buy it. In the first year, Pemberton only made $50 from his creation.

3. E. Then a businessman bought Pemberton’s recipe for his creation. He did something to the recipe and made a really refreshing drink that appealed to many people. Demand for the drink grew.

4. B. In only a few years Coca-Cola became the national drink of the United States. The shape of the famous bottle was invented in 1961. During the Second World War, American soldiers drank three million bottles of Coca-Cola a day.

5. D. This helped spread the name and flavour of “Coke” all over the world.

6. G. Today, nearly a hundred million bottles or cans are drunk every day, in one hundred and fifty-five different countries.

7. F. But no one outside the Coca-Cola company has yet discovered what the “magic” combination of ingredients is, and a very few people—only seven—have ever known the secret formula of Coca-Cola. Only two of them are still alive today, so they never travel on the same aeroplane.

8. A. Anyone can try to make a drink which tastes similar to Coca-Cola. Chemists say that it consists almost entirely of carbonated water and sugar.

This order tells the story of Coca-Cola's invention, its initial reception, and its rise to global prominence.