Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: You know , all those " zeros " I had in the grade book representing missing assignments . But still , she liked me , and she encouraged me in my strengths . I ' ve always wanted to send her an email to thank her for her influence . I figured she would be proud of my achievements , to which I partly credit her and her class .

Question: What may be the reason for missing so much work ?
They did n't make their work a priority .
The reason for missing so much work is not mentioned in the paragraph.