题目内容
I don't know ________ the computer．
[ ]
A．what to use
B．when using
C．where can I use
D．how to use
答案：D
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题目内容
I don't know ________ the computer．
A．what to use
B．when using
C．where can I use
D．how to use
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.