Put the verbs in brackets into the past simple or the past perfect. 1. when i had got/got downstairs the phone had stopped/stopped ringing. 2. i had been/was sorry to leave, as i enjoyed/had enjoyed the party very much. 3. helen had been/was very upset because she had lost/lost her purse. 4. it had been/was a very difficult day, so i had gone/went to bed early. 5. when i had turned/turned on the tv, the match had finished/finished. 6. we hadn’t got/didn’t get a table in the restaurant because we hadn’t booked/booked.

1. When I had got downstairs the phone stopped ringing. 
2. I was sorry to leave, as I had enjoyed the party very much.
3. Helen was very upset because she lost her purse.
4. It had been a very difficult day, so I had went to bed early.
5. When I turned on the TV, the match had finished.
6. We didn’t get a table in the restaurant because we hadn't booked.

выбор в времени в этих предложениях зависит от смысла past perfect используется для "пред " действия. например в 5: когда я включил телик, матч уже закончился = сначала матч закончился (past perfect), а потом я включил телик (past simple) Good lick!