问题描述：
called 为什么要加ed?
．天气没有出现好转的迹象,所以政府号召我们做好防洪的准备.
The weather showed no signs of getting better so the government called upon us to get prepared for floods.
．天气没有出现好转的迹象,所以政府号召我们做好防洪的准备.
The weather showed no signs of getting better so the government called upon us to get prepared for floods.
问题解答：
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