-----___________________________?----She is reading.----Are you doing your homework?----_________.
题目
-----___________________________?----She is reading.----Are you doing your homework?----_________.
-----________________can I keep them?----------Two weeks.------____________does the class begin?----At ten o'clock.----____________subject do you like best?-----I like history best .
答案
What is she doing now?yes,I am(No,I am not)
how long
what time
which(what）
不会可以再问
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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