七年级上册英语课时导航P48页答案

七年级上册英语课时导航P48页答案有几题不会= =、单句改错28：English sound interesting.31:let is to play sports!单词填空：（ ）this your sister( ) you Jane is brother还有一点我懒的打了、如果没有整文的答案、那就告诉我我发的这几题怎么做吧、谢谢