句子改错：what problem you have ,you can aways come to me for help
题目
句子改错：what problem you have ,you can aways come to me for help
答案
no matter what problem you have ,you can always come to me for help
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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