1- yesterday- morning,afternoon,evening
2-this- morning,afternoon,evening,week,month
3-last- night,week,weekend,month,year,February
4-on- Friday,July 10th,Saturday night
5-in- August,1998,June 1999
6-five minutes,two hours,two days,a week,three months - ago
7-at- three o'clock,midday,midnight
