could you tell me什么 last night?a.what you
题目
could you tell me什么 last night?a.what you
could you tell me什么 last night?a.what you were doing b.what were you doing c.what you are doing d.what are you doing
答案
一、A
二、因为
1、英语一般疑问句中,从句是疑问句时,要有陈述句语序,所以只能从A和C中选择
2、因为有 last night,是过去时,所以要排除C,只能选择A
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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