john is doing his homework in his room.改为否定句
题目
john is doing his homework in his room.改为否定句
They are planting trees on the hill.改为一般疑问句
I think you are right.改否定句
They are (playing volleyball)on the beach.对括号里的内容提问
The white dog is (running after me.)对括号里的内容
答案
John isn't doing his homework in his room.What are They planting trees on the hill?I don't think you are right.What're they doing?What's the white dog doing?最好加激愤,很累的~~.``
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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