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