tell me how many students were late this morning
题目
tell me how many students were late this morning
Tell me how many students were late this morning.(保持原句意思)
Tell me the ______ ______ the students who were late this morning.
答案
Tell me the _number_____ ___of___ the students who were late this morning.
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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