"81.2 Which is right?\n1 Don't step on the… cat's …tail. (cat /cat's /cats')\n2 It's my…\n…birthday tomorrow. (father /father's /fathers')\n… look nice. Shall we buy some? (apples /apple's /apples\")\nclothes are expensive. ((Children / Children's / Childrens\")\n…largest city. (Switzerland / Switzerland's / Switzerlands')\n3 Those …\n4\n5 Zurich is\n6 Your.\n7 I took a lot of…\n8 This isn't my coat. It's …\n…parents are your grandparents. (parents / parent's / parents')\nwhen I was on holiday, (photos / photo's /photos\")\n… (someone else /someone else's /someone elses\")\n9 Have you read any of…\n…poems? (Shakespeare / Shakespeare's / Shakespeares\")"