You look very happy.What good news is it?
题目
You look very happy.What good news is it?
为什么句子中要用happy 而不是happily?
不好意思哈,还有两个问题(我会追悬赏的……)
1.David,do you know when _______?
A.will he come here B.he will come here C.he came here D.did he come here
求为什么选B,而不是A)
2.When will Tom come back?
---He will come back ________two days.
A.in B.at C.after D.for
求为什么选A,而不是D)
答案
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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