Prepositions Of Time

1. i was talking so much at lunch that my food went cold
2. it shoulden't take long to repair your watch. come back on half an haour and i'll have it ready for you
3. i was very busy at work and i ended up buying all my presents in the week before christmast
4. it's a holoday in the USA on the 4th july
5. she put her head on the pillow, closed her eyes and at a moment was fast sleep
6.the children were still running around the street on midnight when they should have been in bed