问题描述：
[英语]找出下列句子的错误并改在横线上
i really do not know what to do it ___________
he has come here for two days _____________
we are happy to hearing from you ______________
you should taking come medicine ________________
she often helps hers mother with the chores___________
i really do not know what to do it ___________
he has come here for two days _____________
we are happy to hearing from you ______________
you should taking come medicine ________________
she often helps hers mother with the chores___________
问题解答：
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