造的句是【现在进行时】的句子,就是：【主语+be+现在分词+...】
题目
造的句是【现在进行时】的句子,就是：【主语+be+现在分词+...】
答案
i'm cleaning the room for my mother.
Lily is looking for her shoes.
they are taking photos in the park.
My parents are buying present for my sister in the shop.
Tom is playing games with his brothers.
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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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