问题
选择题
The book is here somewhere, but I couldn't it just now. [ ]
A. put my hands on
B. keep my hand in
C. lay my hand on
D. try my hand at
答案
答案：A
搜题请搜索小程序“爱下问搜题”
The book is here somewhere, but I couldn't it just now. [ ]
A. put my hands on
B. keep my hand in
C. lay my hand on
D. try my hand at
答案：A
缺失，伸长，
龈间隙3mm，哪种处理较恰当（）