the answer is B,tell my why

学习 时间:2026-08-23 06:34:31 阅读:1209
the answer is B,tell my whyto my satisfaction,i noticed that their work_____B was being improved D had being improved

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雪白的泥猴桃

舒服的白猫

2026-08-23 06:34:31

was being improved 表示IMPROVE 的动作当时正在进行。had being improved强调已经完成,发生在过去的过去。improve 发生在notice之前

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  • 朴实的舞蹈
    回复
    2026-08-23 06:34:31

    was being improved 表示IMPROVE 的动作当时正在进行。had being improved强调已经完成,发生在过去的过去。improve 发生在notice之前

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