摘要： Those poor boys make a living by newspapers in the street , A. sell B. selling C. to sell D. sells 答案:B 解题点拨:介词by后接动名词.by selling newspapers意思是“通过卖报纸这种方式 .
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Those poor boys make a living by ______ newspapers in the street.
[ ]
A. sell
B. selling
C. to sell
D. sells
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B. selling
C. to sell
D. sells