is this your watch?yes it is 有错误吗

is this your watch?yes it is 有错误吗 Is this your watch?Yes,it's her watch.这句对话哪里有错误? is this your watch yes its mine it belongs to me is this you Is this his watch?Yes,it's. is this ruler your?yes .找出错误 Is this gutar your Yes,it is( ) Is this your book?Yes,it is 英语解答（ ）1. Is this your watch? A. Yes, it’s his. B. Yes, it’s is this your desk ------yes,it i______ Is this ball your?Yes,it's() is this your watch is your watch broken?yes.i must have it---- A.