what is Jack in his bedroom?可不可以回答：He is writing an letter to Cathy.
题目
what is Jack in his bedroom?可不可以回答：He is writing an letter to Cathy.
只用回答行或不行
答案
好象提问不对啊
what is Jack doing in his bedroom?
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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