题目

A gadget (器具) which makes water out of air could become the greatest household invention since the microwave. Using the same technology as a dehumidifier (除湿器), the Water Mill is able to create a ready supply of drinking water because it can always get it from an unlimited source—the air. The company behind the machine says not only does it offer an alternative to bottled water in developed countries, but it is a solution for the millions who face a daily water shortage. The machine works by drawing in wet air through a filter (过滤器) and over a cooling instrument which changWe'll order tea for twelve people on the __that all twetve will come.     [     ]A. moment    B. situation   C. surroundings  D. assumption