问题
选择题
---Bob’s___ the branches from the tree. Go and _____ for firewood. Bill!
---Do you think I’m really for his kind of work?
A．cut away; cut it up; cut through
B．cut off; cut it down; cut out
C．cut away; cut it up; cut out
D．cut off; cut it down; cut out
答案
答案：C
、
缺失，上颌后缩，下颌前突，前牙反
之间各3mm间隙。