1. (what / Bob / do) What had Bob done that led to his wife leaving him? Ans: What had Bob done

2. (you / eat) Had you eaten anything before the operation? Ans: Had you eaten

3. (he / live) Had he lived in Hong Kong before he started living in Shanghai? Ans: Had he lived

4. (she / find) Had she found before she started studying or after? Ans: Had she found

5. (they / book) Had they booked the bell before he answered the door? Ans: Had they booked

6. (how often / you / ring) How often had you rung the windows. Ans: How often had you rung

7. (why / they / have) Why had they had dinner before leaving for the wedding? It didn’t make any sense. Ans: Why had they had

8. (Carly / wash) Had Carly washed the dishes when her mum came home or did her mum have to remind her to do them? Ans: Had Carly washed

9. (you / read) Had you read the contract before you signed it or didn’t you think it was necessary? Ans: Had you read

10. (who / live) Who had lived in the house before the Wong family? That was the question, the police wanted an answer to and they needed before there was another murder. Ans: Who had lived