题目内容
I don't know ____.
[ ]
A. what to do it
B. how to do it
C. to do what
D. how to do
B. how to do it
C. to do what
D. how to do
B
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ri/ about me. I am fine. 
pt/ her handbag in the symphony hall yesterday. 
nist / boy, isn't he?
n'tinju:/ their education after middle school.