They are becoming ______ helpful. ()
A. many and many B. more and more
【答案】B
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They are becoming ______ helpful. ()
A. many and many B. more and more
【答案】B
【解析】声明：有的资源均来自网络转载，版权归原作者所有，如有侵犯到您的权益
请联系本站我们将配合处理！