下列句子中均有一处错误找出来并改正。

问题描述：

1.()Whatdoyoumotherdo？—————————2.()Howdoeshegowork？———————————3.Weshouldstudyhardafterschool—

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最佳答案：

1.What does you mother do.

2.How does he go to work?

3.We should study hard at school.