帮我补全英语的短语对话
题目
帮我补全英语的短语对话
Hello._________ I ____________ to Jim?
Sorry,he isn't in at this time._____________that speaking?
________ _________ Mary
Can I ______________a message ______________ him?
Yes,_____________you ask him to call me this evening?
No problem.
_________ ____________ very much.
You're welcome.
答案
may speak
不晓得
this is
take for
can
thank you
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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