This problem is too hard for me. Can you help me 2 of 3 or 3 questions of this problem. I really appreciate that

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Topic 24 - Find a House for rent a With a second or third students, looking for a suitable house to rent is a difficult task. Develop a web site to help students to find a house for rent. When a student needs a house to rent, he/she search information of available houses on your website. The website will show all categories of houses with descriptions such as location, area, interior, price, contact, etc. The student will select a house and contact the landlord via email. After dealing, two parties sign a contract confirming the payment and the residing time for the student The new web site has to have main following features (but not limited to): Users: landlord (house owner), student, staff Activities of landlord: registry his house, pay a monthly fee, update the status of the house when it is rented or released in the end of contract Activities of student: find a house by several criteria, pre-order his wanted house Staff: manage landlord, registered student and fee 1. (10 marks) Draw a use case diagram. 2. (30 marks) Write three (03) most critical atomic use cases. Explain why they are the most critical among the other possible (trivial) use cases. A trivial use case might involve some simple interactions, such as simply adding, updating, or removing a single object. (30 marks) Draw two (02) relevant sequence diagrams. How can the quality of a sequence diagram be improved? 3