I hope you know that apostrophe rules change from language to language. For example: These are Clara's shoes. <- That's correct. In German for example you wouldn't use an apostrophe and just say Claras shoes. You should pay more attention in English class. We went over that point quite a lot because it's a mistake people from different countries often make when learning English.
Sorry I was referring to the first guest! I just assumed that he/she is from a country where you do not use an apostrophe when using Saxon genitive.
I do not think there are differences within the same language between countries. At least that's what I learned in school.
Better than the one with the book titles
http://funsubstance.com/fun/213376/when-you-see-it/
I do not think there are differences within the same language between countries. At least that's what I learned in school.