Дайте форму притяжательного падежа, используя -'s, -s':…

We met at. Mr. Harris' house. Columbus' discovery of America was a historic event. From the radio came Elvis' voice. This is a woman's shop. She works in a girls' school. I need Bess' phone number. We'll have a children's party next week. I'll spend the weekend at my friends' house. They need a month's time to finish the project. Take Mike's book off the table. Give me kate's pen. What is this girl's name. На сколько я помню с имена, заканчивающимися на s как Harris, Elvis — можно писать 2 варианта Harris's и Harris' оба будут правильными.