No one except five girls()the meeting last Friday
题目
No one except five girls()the meeting last Friday
were late for
was late for
is late for
are late for
我需要原因
答案
was late for
过去时,主语是单数
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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