求助一道英语填空题His project,(complete) ____ by the end of next year,will greatly expand the city's telephone network.

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求助一道英语填空题
His project,(complete) ____ by the end of next year,will greatly expand the city's telephone network.

to be completed 不定式短语作定语
不定式表未发生的动作
到下年底,表未发生的动作.工程与完成之间是被动关系,所以用了不定时的被动.