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Wemusttake(step)tomakesuresuchanaccidentcanneverhappenagain.正确形式填空是不是steps?why?

题目详情
We must take ____(step) to make sure such an accident can never happen again.
正确形式填空
是不是steps?
why?
▼优质解答
答案和解析
steps
take steps to do sth
采取措施做某事