问题
选择题
No one tells us _____, so we need your help.[ ]
A. how we should do
B. what should we do
C. how to do it
D. what to do it
答案
答案：C
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No one tells us _____, so we need your help.[ ]
A. how we should do
B. what should we do
C. how to do it
D. what to do it
答案：C