问题
选择题
Some people waste too much water. They don’t believe that it can__________some day.
A．keep out
B．run out
C．be run out
D．run out of
答案
答案：B
考查固定短语。A“不让进入”；B“用光”；D“用光......”。句意“一些人浪费太多水了，他们不相信有一天睡会用完。”run out没有被动形式。故选B。