用过去进行时造句(4句)
题目
用过去进行时造句(4句)
答案
When the teacher came in,I was talking.He was watching TV at 6:00 yesterday morning.They were doing their homework from 6:00 to 7:00 last night.She was reading at that time yesterday morning.
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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