Read the following conversation and answer the question.  W: Miguel, why haven't you finished your science homework all week?  M: I'm sorry, Ms. Perry. My house burned down last weekend. My family and I have been sleeping at my grandma's all week. I'm very stressed. I can't do my homework because my grandma's house is so loud and I lost my textbook.  W: Oh, no! Let's talk more about it during lunch. Can you come to my office then?  M: Yes, but I might be a little late. My grandma's kitchen is too small to make food, so I need to buy lunch.  Question: What happened to Miguel last weekend?   - He lost his textbook.  - He took care of his grandma.  - His house burned down.
Answer:
His house burned down.