根据短文内容，选择方框内的单词, 并用其适当的形式填入空白处，使短文意思连贯通顺，语法正确。
hard, others, send, teacher, mind
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Duties of a Student
Education is the very thing that we want to receive. Our parents ____ us to school so as to enable (使能够) us to get knowledge and achieve great things in the future. The followings are the duties of a student which we should keep in ____.
Firstly, we should be filial (孝顺的) to our parents and respectful to our ____.
Secondly, we must study as ____ as we can.
Thirdly, we must not tell lies.
Last of all, we must not criticize (苛求) ____.
To sum up, the above-mentioned rules are the very duties of a student.
