Barack Obama delivered a speech to 500 local youths during his visit to China，many of were from Fudan University and Tongji University．
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推荐题目
Help is needed for families _________ homes were destroyed during the earthquake.
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Julie was good at German, French and Russian, all of ______ she spoke fluently.
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In the cave they found the very book, the cover of _______was torn.
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There is an ongoing debate about the potentially harmful effects ________ text messaging can have on people's grammar.
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that
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whose