读短文，用所给动词的适当形式填空。

     Last Sunday, the Class One Grade Nine students went to the park. They 1_____ (see) many beautiful

fish there. They also saw the sharks. Then they 2_____ (go) to the zoo near the park. Of all the animals,

the monkeys are the most funny, and they are always 3_____ (make) a lot of noise. At noon the students

4_____ (have) a picnic in the zoo. Then they took a bus back to school. After they got to school, Mr Lee

found he 5_____ (leave) his backpack at home.