用括号所给单词的适当形式填空
Class 9  1 (have) a great time on the school trip. They 2  (go) to Blue Water Aquarium for the day. First they ___3____(visit) the Visitors’ Center and watched a movie about  4 （shark）．Then they ____5____(watch) a dolphin show. After that, they went to the Outdoor Pool and __6____(see) a big octopus. After lunch, they went to the Gift Shop and ___7___(buy) lots of gifts. Finally, tired but happy, they ___8__(take) the bus back to school. At the end of the day, the science teacher __9___(be) very happy because the class monitor ___10__(clean) the bus after the trip.