问题
选择题
Little __________ about him and he seems to like playing alone. [ ]
A. we know
B. we don't know
C. don't we know
D. do we know
答案
答案：D
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Little __________ about him and he seems to like playing alone. [ ]
A. we know
B. we don't know
C. don't we know
D. do we know
答案：D
