问题
选择题
I don’t know if he ____, but if he ____ I will let you know.
A．comes; comes
B．will come; will come
C．comes; will come
D．will come; comes
答案
答案：D
搜题请搜索小程序“爱下问搜题”
I don’t know if he ____, but if he ____ I will let you know.
A．comes; comes
B．will come; will come
C．comes; will come
D．will come; comes
答案：D
缺失，基牙条件良好，防止义齿前后撬动最有利的措施是（）