1. The new student couldn’t answer the simplest question, could he?
2. Now the Maths lessons were interesting and exciting, weren't they?
3. The students laughed at the new student, didn't they?
4. The new student had to listen to his classmates, didn't he/she?
5. The Maths teacher was happy to see his “bad” student in the park, wasn't he/she?
6. The “stupid” student was very good at Maths, wasn't he/she?