Good morning, @kmgamal 
Welcome to the Canvas Community. Thank you for posting your question. I'm not sure if you realized this or not, but you have posted your question in the global Canvas Community website where people from all over the world come to ask questions, suggest new Feature Ideas, collaborate with others, join various groups, write blogs, review "how to" Guides, and a whole lot more...all about Canvas. Your question sounds very specific to a course that you are taking at your school. Unfortunately, the vast majority of Community users don't have access to your school's Canvas environment or your course...so we wouldn't be able to help troubleshoot something like this. Your best bet it to contact your instructor directly. You can do this by following the steps outlined in this Guide: How do I get help with Canvas as a student?. I hope this will be of help to you, Khalid. Good luck to you!
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