We were exhausted. We ... for 3 hours. (walk)
had been walking
When my mother arrived home, my dog ... in my bed. (sleep)
was sleeping
... long before the taxi arrived? (wait)
Had you been waiting
It ... hard for several hours and the streets were very wet. (rain)
had been raining
When I arrived home, my dog ... on the carpet. (lie)
was lying
By the time we started dinner, our dog ... already ... the turkey. (eat)
had ... eaten
They ... very tired. They ... hard all day. (be, work)
were, had been working
I found a stray dog last week. It was dirty and hungry. It ... in the street for months. (live)
had been living
My dog was wet and dirty. She ... outside in the rain. (play)
had been playing
By the time I arrived home yesterday, my dog ... for me for 9 hours. (wait)
had been waiting