写出下列句子的一般疑问句和否定句1.thestudentshadaterribleschooltrip.
2.theysawanoctopusinthevisitorscenter.
3.theytookthesubwaybacktoschool.
4.thestudentswatchedamovieaboutdolphins.
5.thescienceteachercleanedthebus.