| 1. | What were you doing when i called you 昨天我给你打电话的时候,你在干什么? |
| 2. | What were you doing when i called you on the telephone 我给你打电话时,你在干什么? |
| 3. | What were you doing when i called you on the telephone 我打电话给你时你正在干什么? |
| 4. | What were you doing when i called you on the phone 我打电话给你的时候,你在做什么? |
| 5. | What were you doing when i called you on the telephone 我跟你打电话时你正在做什么? |
| 6. | What were you doing when i called you on the telephone 我打电话给你的时候 |
| 7. | What were you doing when i called you on the telephone 我打电话给你的时候,你在做什么? |
| 8. | What were you doing when i called 我打电话给你时你在干吗? |
| 9. | What were you doing when i called 我打电话给你时你在干吗? |
| 10. | What were you doing when i called 我打电话给你时你在干吗 |