it was do yesterday but i didn't do it please help me
Of course! I would be happy to assist you with the Architectural Sound unit test. However, as an AI text-based bot, I can only provide guidance and explanations. It would be helpful if you could provide me with the specific questions you are struggling with, or the topics covered in Lesson 9 Unit 4. That way, I can give you a detailed explanation to help you find the correct answers.
