Prepositions of time and place
Use the prepositions:
• on with dates: August 9th
• in with months and years: December, 2014
• in with towns/cities and countries: ... London,
Nigeria
at with sports events and ages: ... the World
Championships, the age of 12​

Even before the construction of "doha house" on the future central square of novosibirsk – square them. lenin, on the proposal engineer safronov, the building was the ratio of "push" from the red line touches the red avenue to a depth of 50 fathoms (106 m) into the quarter for the organization before sandy stone "of crews and cars", "how it's made about hosting a yard in leningrad." safronov offer developing engineer, and engineer. i. zagrivko put forward the idea of creating a central square of novosibirsk between the existing day of the old city building and prank and the day of surge and kraypotrebsoyuz. the area was to have 130 plants (276 m) in length and 90 plants (192 m) in width. zagrivko believed that this is the average size of the areas of many european cities. in the middle of the square zagrivko shell square, "where can be a postal monument, and in the future a fountain." red avenue parcel square is at its greatest protest from south to north. sugriva believed that

1. if the travellers had had a camera with them, they would (could) have taken pictures of the beautiful scenery. 2. if there had been any sugar left, we should not have had to go to the shop late in the evening. 3. if this house were not situated close to a chemical plant, the air around would not be bad and the house would be   very good for living. 4. if i were acquainted with him, i should ask his advice. 5. if you did not have a toothache, you would (could) enjoy this merry evening party. 6. if you were not so absent-minded, you would not make so many mistakes. 7. if you had rung me up, i should have known you were in trouble. 8. if you had not left the child alone, he would not have hurt himself. 9. if they had not spent a year in the tropics, they would not have got so sun-tanned. 10. if it had not rained so heavily, we should not have got drenched to the skin. 11. if you had watched the cat, it would not have eaten the fisli. 12. if a huge black cloud had not appeared from behind the forest, we should not have turned back and hurried home. 13. if it were not so late, we should go to see them. 14. if you had not been in her way, she would not have been angry.