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yuo are driver a bus,At the first stop(第一站),get on three boys,At the second stop(第二站 )get off two boys,At the third stop(第三站),get off five boys and get on thirteen boys,At the fourth stop(第四站),get off six boys,

题目详情
yuo are driver a bus,At the first stop(第一站),get on three boys,At the second stop(第二站 )
get off two boys,At the third stop(第三站),get off five boys and get on thirteen boys,At the fourth stop(第四站),get off six boys,how many boys are there in the bus at last key:大哥大姐帮帮忙,这我可打了半天啊!
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答案和解析
three boys 三个男孩