问题
选择题
It is still unclear ______ the little boy got the CD player to work．
A．where
B．what
C．that
D．how
答案
答案：D
搜题请搜索小程序“爱下问搜题”
It is still unclear ______ the little boy got the CD player to work．
A．where
B．what
C．that
D．how
答案：D