Ответ:
1.Had watched
2.had sent
3.had already visited
4.had moved
5.had happened
6.had stopped
7.had got(иногда используют gotten)
8.had made
9.had met
10.had made
1.Brian had returned books to the library before last Thursday.
2.We had known the results of the test before two o’clock yesterday.
3.I had come to the office before lunch time.
4.You had made the order before we came into the cafe.
5.Sally had sent the letters before her boss returned from the bank.
6.The ferry had reached the port by three o’clock yesterday.
7.The performance had finished by eight o’clock in the evening.
8.They had built a new hospital before the end of April.
9.Мах had had dinner by four o’clock.
10.The baby had woken up before you left home.