1. We were walking in silence when he suddenly asked me to help him.
2. I was just having breakfast when the telephone rang. When I came back to my coffee, it was cold.
3. When I was finishing my letter in the hall, a tall beautiful woman with red hair entered. A dog was following her.
4. Ann dropped two cups while she was washing up last night, but neither of the cups broke.
5. I was walking along the street watching what was going on around me. Fast cars were rushing in both directions and it was impossible to cross the street.
6. The old man who was sitting on the bench beside me was keeping silence. Then suddenly he turned round to me and began to speak.
7. I was standing near the fence when suddenly I heard the voices.
8. He well remembered the day when he first went to school.
9. We were talking about Jim when he ran into the room.
10. The day was marvellous: the sun was shining, the birds were singing, so we decided to go for a walk.
11. Miss Brown's telephone rang when she was dressing.
12. I lit my pipe and nodded to him to show that I was listening.
13. When he came into the office the secretary was doing a crossword puzzle.
14. Why were you not listening to me while I was speaking?
15. He was waiting for her, but she never came.
C) Shall be, will be