К тому времени, как завтра приедет такси, я соберу чемоданы.
By the time the taxi arrives tomorrow, I will have packed my suitcases.
By the time the taxi arrive tomorrow, I will pack my suitcases.
By the time the taxi arrives tomorrow, I'll have been packing my suitcases.
By the time the taxi arrives tomorrow, I will pack my suitcases.