1.

class Room
    {
        string name = "black";
        public void NewPrinter(string name)
        {
            this.name = name;
        }
        public void MakeThisLazyPrinterWork(string value)
        {
            if (name == "black")
            {
                Printer printer1 = new Printer();
                printer1.Print(value);
            }
            if (name == "green")
            {
                GreenPrinter printer1 = new GreenPrinter();
                printer1.Print(value);
            }
            if (name == "blue")
            {
                BluePrinter printer1 = new BluePrinter();
                printer1.Print(value);
            }
        }
        
       
    }
	
2. 	        public void GetAnotherPrinter<T>() where T : Printer, new()
        {
            T NewPrinter = new T();
            PR = NewPrinter;
        }
		
3. В 10 модуле всем 8, кто использовал List.