Kate, Jim, Rose and Bill put their sweaters on the table. The sweaters are white, blue, red and black. We know, the boys’ sweaters aren’t red and the girls’ sweaters aren’t black. What color is Kate’s sweater? I don’t know. But I know it is not blue. Bill says, “My sweater is white.” Then what color are their sweaters?
根据短文内容在横线上填上一个表示颜色的单词, 使句意符合短文意思。