试戴中空托牙恒基托检查的内容不包括（）
A.组织炎症区
B.咬合关系
C.基托伸展范围
D.边缘的密合度
E.基托的固位
参考答案：A
My sister isn't in. _______ she comes back, I'll let her call you back. [ ]
A. While
B. Until
C. Before
D. When
