问题
选择题
— _____ we finish our homework at school?
— No, you needn't. [ ]
A. Must
B. May
C. Can't
答案
答案：A
搜题请搜索小程序“爱下问搜题”
— _____ we finish our homework at school?
— No, you needn't. [ ]
A. Must
B. May
C. Can't
答案：A
缺失，深覆
Ⅲ度，下前牙咬于硬腭黏膜，口内余留牙情况良好，可摘局部义齿设计哪种为最好（）