问题
选择题
___ help the people in the snowstorm in the south made him worried．
A．Not known how to
B．Unknown what to do to
C．His knowing not how to
D．His not knowing how to
答案
答案：D
搜题请搜索小程序“爱下问搜题”
___ help the people in the snowstorm in the south made him worried．
A．Not known how to
B．Unknown what to do to
C．His knowing not how to
D．His not knowing how to
答案：D