1.A custom is something that has become an ____________ way of doing things. A. to be accept B. to accept C. accepting D. accepted 2..The ____________ of quan ho singing has been recognized as a world heritage. A. preservation B. procession C. performance D. song 3..When the ____________ arrives at the Cam Tower, the dancers perform a welcome dance in front of the tower. A. Procession B. crowd C. parade D. dancer. 4..The Le Mat Festival ____________ the founding of the village. A. worships B. commemorates C. performs D.preserves