作业帮practicing a lot is n____ for us to learn English well对划线部分提问smoking may couse _cancer___
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practicing a lot is n____ for us to learn English well对划线部分提问smoking may couse _cancer___
practicing a lot is n____ for us to learn English well
对划线部分提问smoking may couse _cancer___
practicing a lot is n____ for us to learn English well对划线部分提问smoking may couse _cancer___
necessary 必要的 或者填 needed 需要的
What may smoking cause?吸烟会引发什么?