How do I complete this code

#include "Hive.h"
#include <iostream>

using namespace std;

namespace HiveSpace
{
	Hive::Hive()
	{
		what to write here? //Create an instance of each derived class
	}
	
	void Hive::activity()
	{
		???? //Polymorphically call each classes work function
	}
	
	Hive::~Hive()
	{
		????? //Deal with dynamic memory
	}
}

#ifndef HIVE_H
#define HIVE_H

#include "Bee.h"
#include "Queen.h"
#include "Drone.h"
#include "Worker.h"

namespace HiveSpace
{
	class Hive
	{
		private:
			Bee* queen;
			Bee* worker;
			Bee* drone;
		
		public:
			Hive();
			void activity();
			~Hive();
	};
}

#endif