1． 他完成工作后,离开了办公室.After he had finished the work,he left the office.
2． 我到家时,妈妈已经烧好饭了.
When I reached_ home,mother had finished cooking.
3． 到去年末为止,我们已经读完了五本书.
_By the end of last year__,we _had finished_ reading five books.
4． 她告诉我她已经听说了那条好消息.
She _told__ me that she _had heard_ of the good news.