________ an important meeting tomorrow, I have to prepare for it．
题目
________ an important meeting tomorrow, I have to prepare for it．
A. There is B. There will be C. There being D. There to be
答案
答案C “There being an important meeting”是there be的独立主格形式,作原因状语.查看原帖>>
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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