Later he had to throw 50 flashlight batteries away because ______ had been drained from them.
参考答案:all the electricity
解析:[详细解答]此空需填写事件发生的原因。在原文第十五段可以找到答案。
Later he had to throw 50 flashlight batteries away because ______ had been drained from them.
参考答案:all the electricity
解析:[详细解答]此空需填写事件发生的原因。在原文第十五段可以找到答案。