Mary's sweater and millie's sweater are the same.还是用Mary's sweater and millie's sweater are same.就是有没有the

Mary's sweater and millie's sweater are the same.还是用Mary's sweater and millie's sweater are same.就是有没有the
Mary's sweater and millie's sweater are the same.
还是用Mary's sweater and millie's sweater are same.
就是有没有the

Mary's sweater and millie's sweater are the same.还是用Mary's sweater and millie's sweater are same.就是有没有the
应该是用Mary's sweater and millie's sweater are the same.
此时same是代词
pron.同样的事物或人（通常与the连用）

用the，be the same短语，意为：相同。