Question

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

Answer 1

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。