问题
选择题
He is too young. He doesn't know _____ by himself. [ ]
A. what to do things
B. how to do things
C. how to do
D. what to be done
答案
答案：B
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He is too young. He doesn't know _____ by himself. [ ]
A. what to do things
B. how to do things
C. how to do
D. what to be done
答案：B