41. Remember, you're dealing with kids who often don't know what a flush toilet is. 42. But first comes the hurdle of dealing with showers, flush toilets and light switches. 43. For instance, trying not to flush toilets during heavy rains is a simple consideration. 44. Primitive forms of flush toilets have been found to exist since ancient Neolithic times. 45. It has a kitchen, three bedrooms equipped with cots and three bathrooms with flush toilets . 46. Is there anything we can do about our ( 1 . 6 )-gallon flush toilets ? 47. Now tall apartment buildings with flush toilets and other modern amenities sprout across South Korea. 48. An American aid worker quietly explained flush toilets in a stall at the Nairobi airport. 49. Americans love flush toilets and will not be deprived of their convenience _ at any cost. 50. "Some don't have running water and flush toilets .