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Vocabulary - Assure, Ensure, Insure


source: Learn English with Emma [engVid]    2012年6月25日
http://www.engvid.com/ Assure, ensure, insure, reassure? Learn what these words mean in this vocabulary lesson. I assure you that after this video, you will not mix up these words again. After watching, make sure you've understood by taking the quiz at http://www.engvid.com/assure-ensure-i...