问题
选择题
May works hard at her study, and she does her homework ______ every day.
A．for herself
B．on herself
C．in herself
D．of herself
答案
A
题目分析：句意：玛丽学习努力，她每天亲自做作业。for herself为自己、亲自，on herself 无此用法，in herself自身，of herself自发地；根据语境可知是玛丽自己完成作业，故选A.
