《What can I do for you?》SectionD PPT-302edu教育资源网

Exercise

21 22 23 24 25 26 27 28 29

twenty-one —————— twenty-three twenty-four —————— twenty-six —————— twenty-eight ——————

30 40 50 60 70 80 90

thirty ——- ——- sixty seventy ——- ——-

one hundred/a hundred ———————————— ———————————— ———————————— nine hundred (and) ninety-nine

100 101 185 315 999

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