Andy makes fewer mistakes than Millie . He does his homework carefully(careful)
翻译：艾迪比米粒犯得错误少,所以推断出艾迪做作业很认真需要加个 more 吗？和米粒比较的话要的，本题有点争议，如果说考试的话就more carefully本题完整为 He does his homeworkmore carefully(careful)than Millie