my new dress is in the wardrobe.（改同义句）
题目
my new dress is in the wardrobe.（改同义句）
My new dress is in the wardrobe.（改同义句）
There are some big trees behind my house.（改单数句）
There are knives in the room.（改单数）
There is nothing in the bag.(改同义句)
答案
My new dress is in the wardrobe.（改同义句）
There is my new dress in the wardrobe.
There are some big trees behind my house.（改单数句）
There is a big tree behind my house.
There are knives in the room.（改单数）
There is a knife in the room.
There is nothing in the bag.(改同义句)
The bag is empty.
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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