1.The friends were responsible for the project weren't they?
2.Tomorrow the students will arrange the date and time, won't they?
3.Jim didn,t take part in the project did he?
4.There were a lot of students in the hall, weren't there?
5.Mary is goin to see the dentist, isn't she?
6.It was sunny and warm yesterday, wasn't it?
7. Chris likes taking photos, doesn't he?