_____ help the people in the snowstorm i
题型:选择题
问题:
_____ 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
_____ 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