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