Don't leave the water while you brush your teeth.
A. run
B. running
C. being run
D. to run
网友回答
A. run
(答案→)B. running
C. being run
D. to run
解析:考查分词做补足语。本题leave的宾语是the water,the water与run是主动关系,故使用现在分词的形式。现在分词做补足语表示主动和正在进行。Leave the water running让水一直流淌着。句意:当你在刷牙的时候,不要让水一直都流淌着。故B正确。