谁能帮忙写5个主谓宾结构的否定句,疑问句?
题目
谁能帮忙写5个主谓宾结构的否定句,疑问句?
答案
Does he read newspapers every morning?Mary won't have dinner at home tonight.The boys aren't making model planes now.Do you play computer games often?My aunt hasn't cleaned the living room.
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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