翻译.
1.经过漫长的谈判终于达成了协议。(make a deal)
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2．那一天，所有的市民都参与了植树活动。(involve)
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3．无论多么先进，电脑也只能做人类让它去做的事情。
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4．如果我们的右手忙着和别人打招呼，就不可能握有武器了。(be busy doing)
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5．If the same two persons meet again by chance，even years later，they pick up the
friendship where it left off and are delighted.
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