1 Did the students have a terrible school trip?
The students didn't have a terrible school trip.
2.Did they see an octopus in the visitors center?
they didn't see an octopus in the visitors center.
3.Did they take the subway back to school?
they didn't take the subway back to school
4.Did the students watch a movie about dolphins?
the students didn't watch a movie about dolphins
5.Did the science teacher cleane the bus?
The science teacher didn't clean the bus