Unit7How much are these socks?-B-1a-2b

Section B1a-2b one two three four five six seven eight nine ten eleven 11 twelve12 thirteen13 fourteen14 fifteen15 sixteen16 seventeen17 eighteen18 nineteen19 twenty20 thirty30 forty40 fifty50 sixty60 seventy70 eighty80 ninety90 one hundred100 one hundred and one101 twenty-one 21 twenty-nine29 thirty-one 31 thirty-nine39 forty-one41 forty-nine49 fifty-one 51 fifty-nine59 sixty-one61 sixty-nine69 seventy-one71 seventy-nine79 eighty-one81 eighty-nine 89 ninety-one91 ninety-nine99 数字小结： two2 ---- twelve12 ---- twenty20 three3 --- thirteen 13 --- thirty30 four 4 --- fourteen 14 --- forty40 five 5 --- fifteen 15 --- fifty50 six6 --- sixteen16 --- sixty60 seven7 --- seventeen17 --- seventy70 eight 8--- eighteen 18 --- eighty80 nine9 --- nineteen19 --- ninety90 one1 ---- ten 10 --- one hundred100 17 25 37 48 19 51 73 98 43 66 80 75 84 36 28 49 57 68 37