2
1) were cycling
2) wasn't wearing
3) was having
4) wasn't raining
5) weren't studying
6) wasn't talking
3
1) Why was your sister carrying a big bag?
2) Was Nurbol playing in the basketball match?
3) Were your friends walking near the river?
4) What were they talking about?
5) Where was the train going?
6) Who was you talking to?