when did that little tiger laeve its mother?it had to live alone___10 months old because its mothers died
问题描述：
when did that little tiger laeve its mother?it had to live alone___10 months old because its mothers died
A.at B.for C.on D.in 快,
答
c为什么只有on才表示是十个月大的时候离开他的母亲独自生活。at翻译为他有十个月独自生活。for翻译为他独自生活十个月大。in翻译为他独自生活在十月。只有on符合题意，所以选c好吧，在多大的时候介词用的是at，不过还是谢谢你这个题考察的就是思维定式，好吧，等待老师公布答案吧