refusing to be persuaded or to change one's mind.
2.) If Columbus hadn't brought back new and interesting food, our food today wouldn't be more diverse.
3.) If I hadn't moved to India, my taste in food wouldn't be different now.
4.), If the weather conditions were terrible, the farmers didn't have a good harvest.
5.) If Julia Child hadn't wrote a recipe book, I wouldn't be able to cook French food all the time.
Well,
"Chem" is usually capitalized. But I believe it is the short form of the subject, Chemistry.
My educated guess would be that "in an old bus" is the object of the preposition.
