How many of your classmates drink cola now? Nearly everyone 1.______(drink) it. Did you know that cola 2.______(be) a kind of medicine about 200 years ago? John S. Pemberton was a doctor 3.______ America. He spent many months 4. ______ (find) this medicine for headache and put the cola into bottles to sell it in drugstores. People have 5.______ add water to it before drinking. One day, a man who 6. ______(have) a headache came into a drugstore. He asked for a bottle of 7.______. He wanted 8.______(take) it right away, so he asked the clerk to add some water to the medicine. But there was no hot water, the clerk used soda water instead. After drinking it, the man said it tasted 9. ______(wonder). From then on, it began to become more popular. Today cola is 10. ______(sell) in most countries around the world.