The old man told us and .
A. to do what , to do how
B. what to do it, how to do it
C. what to do, how to do it
D. what to do , how to do
网友回答
A. to do what , to do how
B. what to do it, how to do it
(答案→)C. what to do, how to do it
D. what to do , how to do
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