I. Put in the correct prepositions AT / ON / IN: 1. Columbos discovered America ......... 1492. 2. You can see the stars ............... night, if the sky is clear. 3. Tom isn't here ............. the moment. He'll be back ............. five minutes. 4. The course begins ........... 7 January and ends ............ 10 March. 5. Tom's grandmother died ........... 1977 ........... the age of 79. 6. The price of electricity is going up ............. October. 7. Ann works hard during the week, so she likes to relax ............. weekends. 8. I can't be at home ............ the morning. Can you phone me .......... the afternoon instead? 9. Jack's brother is an engineer but he's out of work ........... the moment. 10.............. Sunday afternoons I usually go for a walk in the country. 11. Tom doesn't see his parents very often these days- usually only ........... Christmas and sometimes............ the summer for a few days. 12. The telephone and the doorbell rang ............. the same time. 13. I walk up a lot of stairs everyday. My flat is ............. the third floor and there is no lift. 14. We went to the theatre last night. We had seats ............ the front row. 15 .It can be dangerous when children play football .............. the street. 16. I can't find Tom ............ in this photograph. 17. Do you take sugar .............. your coffee? 18. You can find the sports results .............. back page of the newspaper. 19. Sue and Dave got married ............... Manchester four years ago. 20. Paris is .............. the river Seine.