Four students are in the classroom. They are Anna, Tom, Mike and Mary. Their jackets are on the teacher's desk. The jackets are brown, white, red, and blue. But we don't know whose（谁的）they are. We know the boys' jackets aren't red and the girls' jackets aren't brown. What color is Mary's jacket? We don't know. But Mary says it's not blue. Tom says, "My jacket is white. "Do you know the colors their jackets?
