11．The year 2010 witnessedthe 41st Expo in Shanghai，which attracted people from all over the world．

分析 2010年見證了上海第四十一世博會(huì)，該世博會(huì)吸引了來自全世界的人們．

解答 答案：witnessed
根據(jù)句意以及首字母的提示可知，此處在句中作謂語，意為：證明，見證；應(yīng)使用動(dòng)詞witness的某種形式；根據(jù)which引導(dǎo)的非限定性定語從句使用了一般過去時(shí)可知，此處描述的是過去的動(dòng)作，故用witnessed．

點(diǎn)評 做首字母填空題時(shí)，可根據(jù)句意以及首字母的提示判斷出空缺處的意思，從而確定出要填的單詞；然后從語法分析的角度，確定出應(yīng)填單詞的形式；因此在平時(shí)的學(xué)習(xí)中，除了應(yīng)牢固記憶單詞的拼寫之外，還要熟練掌握一些語法知識．

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