选择正确的答案填空,并翻译句子。 1.The pipes buried under the ground take the water to the houses, shops, factories, offices and all the users. A. sewer B. waste C. distribution D. spray 2. Virtually all establishments where food is cooked, prepared or processed discharge some grease into the system in the form of fats or cooking oils. A. distribution B. drainage C. cistern D. residential 3. The rainfall which enters the ground and becomes the ground water is called water. A. infiltration B. evaporation C. surface D. spring.