The students bought the English book tuo days ago.用现在完成时改写 The students ___ ___ the
题目
The students bought the English book tuo days ago.用现在完成时改写 The students ___ ___ the
The students bought the English book tuo days ago.用现在完成时改写
The students ___ ___ the English book ___ two days ago.
答案
The students have had the English book for two days.
The students have had the English book since two days ago.
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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