1) Did I play computer games yesterday?
2) What was Nick doing when you came to his place?
3) What were
you doing when I rang you up?
4) What did
he do yesterday?
5) Are you cooking dinner now?
6) We washed the floor in our flat yesterday, didn't we?
7) Did
you do your homework yesterday?
8) Were
you doing your homework from eight till ten
yesterday?
9) Why is
she sleeping now?
10)They go to Moscow every year, don't they?