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    13．-Tom is never late for work. Why hasn’t he come yet now? -Something to him. A．must have happened B．should have happened C．could have happened D．must happen 【查看更多】

     

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    —Tom is never late for work. Why hasn’t he come yet now?

    —Something          to him.

    A．must have happened        B．should have happened

    C．could have happened       D．must happen

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