For the second part just change the first part of it to “did”
1. Did he see a traffic incident yesterday?
2. Did they swim in the sea yesterday afternoon?
3. Did he decide to accept the new job a few days ago?
4. Did Bob eat all of my food last weekend
5. Did Dave join / go to a party last night
6. Did Lucy work for a big company last year?
7. Did something strange occur this morning?
8. Did John ring me yesterday?
9. Did she make a cup of tea a few minutes ago?
10. Did he move to Phnom Penh last month?
