Everyone learns English - unit 3: classroom (a/an/-s)Versión en línea grammar por Duong Tuan 1 A Letter Yes No 2 Two number Yes No 3 An pen Yes No 4 An Orange Yes No 5 Three bananas Yes No 6 An apple Yes No 7 Six Rulers Yes No 8 An Bag Yes No 9 A Flowers Yes No 10 A Chair Yes No 11 Eleven Pencils Yes No 12 Twelve Ball Yes No 13 A Tables Yes No 14 A Friend Yes No 15 Five Crayons Yes No 16 A Book Yes No 17 A Teachers Yes No 18 An Egg Yes No 19 Four Cat Yes No 20 An Cupboard Yes No
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