The policeman said the accident last night ( )careless driving ,so much money ( )be paid by the
题目
The policeman said the accident last night ( )careless driving ,so much money ( )be paid by the
driver.A.was due to ;was due to B.is due to ;was due to （为什么选A不选B呢,谢啦）
答案
因为前面是警察said就是过去说的,描述过去（昨夜）的事情 所以用was due to.
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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