unit 1 consonant pp·bb unit 2 consonant tt·dd unit 3 consonant ff·vv review unit 4 consonant hh·jj unit 5 consonant kk·gg unit 6 consonant mm·nn review unit 7 consonant ll·rr unit 8 consonant ss·zz unit 9 consonant cc· review unit 10 consonant ww·yy·xx unit 11 short vowel aa unit 12 short vowel ee review unit 13 short vowel ii unit 14 short vowel oo unit 15 short vowel uu review answers
以下为对购买帮助不大的评价