1Where do the Milys go on holiday? 2Where do the Mily's family go on holiday? 3Where are the Millys go for vacation? 4Where are the Milly's family go for vacation? 5Where will the Millys go for a holiday? 6Where has Millie’s gone for a vacation? （1.2为一般时态） （3.4为进行时态） （5为将来时态） （6为完成时态）
