1 . By the end of next month, the bridge ________ (complete). (所给词的适当形式填空)
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2 . By the time I come back in ten years’ time, all these old houses ________ (pull) down. (所给词的适当形式填空)
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3 . They are trying to make sure that 5G terminals will have________ (install) by 2022 for the Beijing Winter Olympics. (所给词的适当形式填空)
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