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问题: 请帮忙解答一下

We must take care of using water,or it will be one day in the future.
A run out of B run out C run away of D run away
答案是A,我感觉不对,B也应不对,因为run out 不用被动语态,请帮分析一下?谢谢.

解答:

是A呀,it will be run out of one day in the future。
如果改成主动,就成了这样了:
we will run out of water / it one day in the future.