Mike"s and Molly"s grades have improved.
迈克和莫莉的成绩已有进步。
Mike's and Molly's grades have improved.
迈克和莫莉的成绩已有进步。
Since Ms.Ruto hooked up the system, her teenagers' grades have improved because they have light for studying.
自从露托小姐建起了这套装置，有了学习用的照明，她十多岁孩子的学习成绩提高了。
Decreased drug use, improved health, better grades, increased confidence and other benefits also have been found by various researchers.
很多研究人员还发现，体育运动有助于减少毒品使用、增进健康、提高学习成绩、增强自信等等。
By helping each other, the students have improved their grades.
通过互相帮助，学生们提高了学习成绩。
By helping each other, the students have improved their grades.
通过互相帮助，学生们提高了学习成绩。
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