Choose the best answer

1.The more she smiles,........she becomes.
A.more graceful                    B.the most graceful
C.most graceful                    D.the more graceful
2.hotel have developed................restaurants.
A.as rapidly as                      B.so rapidly as
C.as rapid as                        D.more rapid
3.CAN THO bridge is the.............one in the south of VIET NAM.
A.long              B.shortest
C.longest        D.longer