用方框中所给单词的适当形式填空．每词限用一次．
quiet，send，center，million，go．

71．The Internet joins    of computers all over the world．
72．It’s so    in the park!I can hardly hear the traffic in the streets and no one is shouting．
73．I’m looking forward to    to the Forbidden City with my parents．
74．Vienna is the capital city of Austria and the    of European classical music．
75．China is now the third country，after the Soviet Union and the US，to    a person into space．

【考点】选词完成句子

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