Ответ:

they had finished

Ed visited

We did it after we had returned

Had you learned English before you came…?

Mike had started to play when he was five

The children had not had dinner before mother phoned

Why hadn’t Jane visited us before she left?

he just lost his

The rain hasn’t stoped by lessons were over

We had never see… we arrived to

Sally had written … she posted them

AABBBABBAB

Объяснение:

Какое действие в прошлом было первее, то Past perfect. Какое действие было последним - Past simple.