Exercise 2. Fill in the blanks with "do; does; did; was; were; am; is; are". 1. a symbol usually have a special meaning? 2. Trick-or-treating 3. The Christmas tree 4. I a student. 5. The word "festival" a customary celebration for children on Halloween. the symbol of a long life. originally used as an adjective from the late fourteenth century, deriving from Latin via Old French.