Linda is my sister's the best friend. 中有一处错误,请指出并改正.

Linda is my sister's the best friend. 中有一处错误,请指出并改正.
Linda is my sister's the best friend. 中有一处错误,请指出并改正.

Linda is my sister's the best friend. 中有一处错误,请指出并改正.
去掉the,前面已经有了sister's了

把the去掉

去掉the

Linda is the best friend of my sister's

去掉the，最高级前有this that ,my ,your,his 等时冠词the就不要带了