安要求完成下列句子.
题目
安要求完成下列句子.
1.It is raining hard.(改为感叹句)
2.His girl friend was unhappy at the news.(完成反意疑问句)
3.I study English by speaking (对by speaking 提问)
4.Both his mother and his father have seen the film.(变成否定句)
答案
what a hard raining is it
his girl friend was unhappy at the new wan't she
how do you study english
neither his mother nor his father has seen the film
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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