what was your grandparents used to do when they were young 的意思是?
题目
what was your grandparents used to do when they were young 的意思是?
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答案
好像有点语法错误吧what did your grandparents used to do when they were young ?你祖父母年轻时常做什么?或what was your grandparents used to doing when they were young ?你祖父母年轻是习惯做什么?...
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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