[气球r]分为5级, 五个等级:pre-primer,primer,1st grade,,2nd grade
大量phonics练习,不仅有字母,还有rhyming words,sight words,以及稀
【kindergarten,1st grade,2nd grade,3rd grade,4th grade,5th grade
5个级别,分别是 preprimer,primer,1st grade,2nd grade,3rd grade.
dk出品dk workbooks: spelling, 1st - 2nd grade: learn andexplore
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