He has had some cabbage.(改为一般疑问句）I have had a haircut today.(改为否定句）
题目
He has had some cabbage.(改为一般疑问句）I have had a haircut today.(改为否定句）
Tommy must go to the library.（改为一般疑问句）
答案
He has had some cabbage.(改为一般疑问句）Has he had any cabbage?I have had a haircut today.(改为否定句）I haven't had a haircut today.Tommy must go to the library.（改为一般疑问句）Must Tommy go to th...
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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