Fill in each numbered blank with one suitable word or phrase A useful device for getting rid of cockroaches (1). . . . . . . . . . . . . . . . . by a housewife. The device is called 'Stop-Roach' and will soon be on sale in department store and large shops. 'Stop-Roach' (2). . . . . . . . . . . . . . . . of a hollow cylinder and movable valve. It is placed in any drain or opening where there are cockroaches. Cockroaches (3). . . . . . . . . . . . . . . . . to enter the house through the drain will find it impossible to get through the device. 'Stop-Roach' has been subjected to thorough tests by the Environment Ministry and the invention has now been patented. It has been found completely foolproof against invasions of cockroaches from drains and sewers. It (4) . . . . . . . . . . . . . . . that 'Stop-Roach' (5). . . . . . . . . . . . . . . . . . . . on sale very soon for under ten dollars. Question 3.