— What happened to the heroes at the end of the book?

— All of them _____ escape from the enemy's prison and began their new life. [ ]

A. tried to          

B. managed to          

C. wanted to          

D. did their best

颅颌固定法常用于

A．牙槽突骨折

B．髁突骨折

C．下颌角骨折

D．上颌骨骨折

E．颅骨骨折