had
- Kate had paid him in advance, which _________ was a mistake.
- No sooner _____ back to the kitchen than the doorbell rang.
- No sooner had I come to the office _____ the boss told me that I was fired.
- Not until he left his home ______ to know how important the family was for him.
- Not until I had arrived home______ my appointment with Michael Smith.
- Only when he returned _________ that the war had ended and the army had come back.
- Only when I left my parents for America ____ how much I loved them.
- So little known _____ that soldiers had to ask for a guide.
- The E-mail Jack had looked forward to ______ last night at last and he was very happy.
- The holiday we had been looking forward to _________ at last.