初中英语阅读完形填空100篇（十）91 Miss Richards was a teacher at a school for boys and girls. She _1 chemistry and physics from the lowest to the highest classes in the _2 . Sometimes the new classes 3 rapidly, but sometimes they were very 4 , and then Miss Richards had to 5 things many times.One year, the first class had been studying chemistry for several _6_ when Miss Richards suddenly asked, What is water? Who knows? 7_ up?There was silence (沉默) for a few seconds, and
