The story of the group traveling in the desert was —— we had never heard before.A：that B：it C：one D：the one为什么选one,语法上分析分析呢 还有 为什么不是定语从句呢?为什么不选that呢,这句话有没有其他讲法呢 比如 The story of the group traveling in the desert was one which we had never heard before,
The story of the group traveling in the desert was —— we had never heard before.
A：that B：it C：one D：the one
为什么选one,语法上分析分析呢 还有 为什么不是定语从句呢?为什么不选that呢,这句话有没有其他讲法呢 比如 The story of the group traveling in the desert was one which we had never heard before,
是定语从句，引导词which/ that被省略了啊。
意思是：我们从来没有听说过的一个团队。因为不是特指，所以不能用the one,也不是上文中提到过的，所以也不能用it,而that又只是一个引导词，所以只能选择C。
one 在句子中是was 之后的表语，其实就是说The story of the group traveling in the desert was one story，为了避免重复，省略到了story，什么样的故事呢，用之后的定语从句we had never heard before来修饰。
至于你说的加上which也是可以的，因为原句中的定语从句是因为先行词做了定语从句中的宾语，所以省略了关系词，你这样加上也是可以的。
直译是关于这群在沙漠中旅行的人的故事是一个我从未听说过的故事.one相当于a story,避免重复.因为不是特指,所以用one.one的后面是定语从句,修饰one,可以有that,但在定语从句中作宾语,经常省略.
因为缺少了一个主语，这里用one 来代替主语
The story of the group traveling in the desert was one which we had never heard before，也行的，which 改为that 也行，这里which 和that 都可以省略