Составить предложения на английском языке с предлогами at, in,on, since, before, afier, about, for.

1.What  are you going to do after this class
2. I knew her before I saw her.
3.Anna met Jim in 1994.
4.Im seeing Jim at 4 tonight.
5.They have been talking for three hours!
6.We had a nice picnic on the 1st of May.
7.I havent seen him since Monday.
8.Walk about the square and meet me in 15 minutes/