选择合适的代词完成下列句子(每词只用一次)。 mine his its our my hers her yours their theirs 1、Whose is this nice skin? It's . 2、I have a good friend. name is Hellen. 3、 Maths teacher is Miss Li. We're in the same school. 4、Are they his shoes? Yes, they're . 5、 I have a lovely dog. name is Bobby. 6、Can I have an apple? Sure, is over there. 7、Your storybook is old, is new. 8、Su Yang and Su Hai are twins. trousers look the same. 9、Who is the old man over there? He's uncle. 10、We have a basketball here. But is on the playground.