1. When he wanted to wear his suit, it (to dry- clean). 2. Tom's pets (to feed) when I arrived at his house. 3. While they (to photograph), the camera broke down. 4. While I (to introduce) to Mary, the tele- phone rang. 5. The fence (not to paint) at ten o'clock yesterday. 6. This newspaper (not to print) twenty-five years ago. 7. This hole (not to dig) when I went past yesterday. 8. When I arrived home last night, the din- ner (not to cook). 9. Why was his suit (to dry clean)? 10. Were you (to photograph) at three o'clock yester- day? 11. Was Mary (to introduce) to Mr. Brown when you saw her? 12. Weren't Tom's pets (to feed) when you arrived at his house? 13. Wasn't Betty (to ask) to sing when you came into the room? 14. Why wasn't the dinner (to prepare) when you arrived home? 15. When you arrived at the party, Mary (to ask) to sing, wasn't she?
