The waiter served something that we ______. (not order)
hadn't ordered
They didn't want to have lunch because they ______. (already eat)
had already eaten
He moved because he _______ a job in another place. (get)
had gotten
He had to leave because he ______ to pick Molly up. (arrange)
had arranged
Everybody noticed that you ______ a mistake. (make)
had made
He ______ about returning to his hometown. (never think)
had never thought