Answer:
1. On that day, we didn't have anything to eat. (No error)
2. What kind of car did you buy?
3. Who came? (No error)
4. They did anything about the problem last week.
5. What went wrong yesterday?
6. Did he have much fun on the trip?
7. What happened to you yesterday?
8. Who took my books? (No error)
Step-by-step explanation: