I would be happy to expand on the previous email and provide a reasonable reason why someone may be unable to complete their homework on time. Here is the rewritten email:

    Dear [Name of Teacher],
    
    I deeply regret to inform you that I will be unable to complete my homework within the required timeline.  
    
    After attempting the work, I found many of the questions difficult to complete. 
    
    I would like to convey that my failure to complete the given task within the specified time is not because of my unwillingness to do it, and I hope you can understand that.
    
    I request that you consider allowing an extension on the deadline to hand in the work. With more time I can use additional resources to enhance my learning and allow me to complete the required work.
    
    I hope you can please forgive me and look forward to hearing your decision on if an extension can be applied in this case.
    
    Thank you,
    [Your Name]
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