楼主 (北美华人网)
周围很多朋友都买，说蛮不错的，刚好亚麻有活动 https://www.amazon.com/dp/0887431453? 
School Zone 学前准备练习书 https://www.amazon.com/gp/product/1681472821? 
School Zone 学前准备练习书 https://www.amazon.com/gp/product/1681472821? 
School Zone 学前准备练习书 https://www.amazon.com/gp/product/1681472821?