we were very worried when we didn‘t see Eric对very worried提问
题目
we were very worried when we didn‘t see Eric对very worried提问
__ __ you when you didn't see Eric?
After we had supper ,we began to do our homework.对After we had supper提问
__ __ you __ begin to do your homework?
答案
we were very worried when we didn‘t see Eric对very worried提问
how__ _were_ you when you didn't see Eric?
After we had supper ,we began to do our homework.对After we had supper提问
_when_ _did_ you __ begin to do your homework?
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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