1. Almost everybody (leave)……………had left……………. by the time we (arrive)……………arrived……………..
2. He (wonder)……………wondered……………. whether he (leave)……………had left……………. his wallet at home.
3. The secretary (not leave)……………didn't leave……………. until she (finish)……………had finished……………. her work. The couple had scarcely (enter)……entered…. the house when they (begin)……………began……………. to argue.
4. The teacher (ask)………asked…………. the boy why he (not do)……………hadn't done……………. his homework.
5. She had already (post)……posted…. the letter when she (realize)……realized…. she (send)……had sent…. it to the wrong address.
6. Hardly had the car (go)…gone a mile when it (have)………had……. a flat tire.
7. The weather (be)…is…. far worse than we (expect)……expected…..