Amy is(　　) red today

Amy is at a red sweater today.这句话咋错了? Today is a red letter day Lucy is in a red hat today Mary is wearing a red dress today. Amy's bike is red.Lily'bike is red ,too改写同义句 1 .Amy is ( in )today.为什么用in,不用on. Amy:Today is September 9 th.下面.快点点点点点, He wears a red skirt today与He is wearing a red skirt today的区 Kate is wear red shirt today还是Kate is wearing red shirt toda Today is a blue shirt and red tie day Today she is in red sweater.哪错了? Look.Lucy is____a new red dress.She is beautiful today.