题目内容：

阅读短文，从方框中选择适当的动词，并用其适当形式填空。有的需要加助动词或不定式符号 (每词限用一次)。

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Beijing (CNN) reported that on the December 31st 2014, there were so many people on the beautiful beaches of Shanghai. When the people1.themselves, there were so many people that a terrible tragedy(惨剧) took place suddenly. Thirty-six people2.their lives in this accident. The victims(遇难者) were young, with an average age of just 22. The oldest was 37, the youngest was only 12. Witnesses(目击者) have3.what they saw on the beaches. There are many different voices about the reason of this accident. The real reason of it is being4.. We all believe that we will get the truth one day. President Xi Jinping has called for a full and immediate investigation(调查) into the cause of the tragedy. Xi called for all-out efforts to help the injured. President Xi said governments across the country should5.measures(措施) in order to better protect public safety during major public holidays and celebrations.