翻译和例句：
surveyed (参与调查者), 20 percent didn’t know February 29 was a leap day (闰日) — one in 10 thought ……
日历中多出来的一天。课件及教案见网站 测试见7版THIS Wednesday, Billy Schaffner will celebrate his 15th birthday. He will be 60 years old.How is this possible? Billy was born on February 29, or “Leap Day (闰日)”. Leap Day ……
(闰日)". It only comes once every four years!"I'm always young!" Guo said.February usually has 28 days ……
为什么会有闰年？词数 219 建议阅读时间 6分钟 ON February this week, Billy Schaffner will celebrate his 15th birthday. He will be 60 years old.How is this possible? Billy was born on February 29, or “Leap Day (闰日 ……
上句介绍伦敦是一个多元化的城市（multicultural cities）可知，这个国家会有不同的文化，different后接可数名词复数。Passage 3【解析】出生于2月29日的比利，60岁只过了15个生日。原来2月29日是闰日，闰日只发生在闰年，每四年才来一次。1. possible。上段介绍比利60岁只过了15个生日，“这怎么可能?”。2. once。leap years是闰年，每隔四年出现“一次”。3. way ……
extra (额外的) day, February 29. We call the extra day leap day (闰日). We call the year with that special ……
was born on Feb 29, or “Leap Day (闰日)”. Leap Day only 3 on “leap years”, which come once every four ……
is this 1 ? Billy was born on Feb 29, or “Leap Day (闰日)”. Leap Day only happens on “leap years ……
birthday. He will be 60 years old.How is this 1 ? Billy was born on Feb 29, or “Leap Day (闰日)”. Leap ……
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