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試題詳情
Through the doctor's efforts,the number of people who suffered from cholera had decreasedhad decreased(decrease) significantly by the end of last century.
【考點(diǎn)】過去完成時(shí).
【答案】had decreased
【解答】
【點(diǎn)評(píng)】
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發(fā)布:2024/8/2 8:0:9組卷:2引用:0難度:0.9