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选择:()Johnistwentyyearsold,buthehasonlyfivebirthday.Why?Becausehewasborn.A.atnightB.fiveyearsagoC.onthelastnightofayearD.
onFebruary29
()
英语
ight of a year
OnFebruary29，BillySmithwillcelebratehis15thbirthday．Hewillbe60yearsold．Howisthispossible？Billywasborn
onFebruary29
，or"LeapDay"Leapdayon
英语
r"Leap Day"Lea
1
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