1.When I went by,I saw many interns (march) up and down the street.
答案marching
2.At the open ceremony,many school pupils were wearing traditional (costume).
答案costumes
3.They are going to give some (perform) on the eve of the Spring Festival.
答案performances
4.In my opinion,the Rio Carnival is the most (excite) of all the festivals.
答案exciting
5.Congratulations your being elected Chairman of the Students’ Union.
答案on
