Preposition of time

1. The course begins on 7 January and ends on 10 March.
2. The doctor was busy with another patient at the time.
3. My wife and I make trips to nearby cities from time to time.
4. I went to bed at midnight and got up at 6.30 the next morning.
5. Are you doing anything special at (brit) on (amr) the week-end ?
6. I don’t think Mr. Yana plans to stay in Jakarta for very long.
7. The Captain ordered Sergeant Hardy to leave at once.
8. In the beginning, everything seemed to be difficult for us.
9. Do you fancy going to the cinema on Friday night ?
10. Both of the men were trying to speak at the same time.
11. Would you please try to be much more careful from now on ?
12. There are usually a lot of parties in (for season) at (festival) New year’s eve.
13. At times, I felt as though I would never be able to finish it.
14. Please submit your reports to me by/at Thursday at latest.
15. I think your suggestion is probably the best one in the long run.
16. My grandmother died in 2013 at the age of 89.
17. We had taken a taxi in order to get the meeting  in (masih ada sisa) on (tepat) time.
18. For the first time in his life, he did not argue about anything.
19. I am usually completely exhausted at the end of the day.
20. Marry and Herry always go out for a meal at their wedding anniversary.

In the end : pada akhirnya

At the end : waktu 

At lebaran/chrismast (festival)

In summer (musim)

At kompleks, on Jalan Margonda, in Depok

At my desk

On my chair

At the corner at Mc Donald (somewhere there)

Dawn = subuh

Dush = senja.