I go to the mall (on Sundays).(向打括号的提问)
题目
I go to the mall (on Sundays).(向打括号的提问)
_____ _____ you go to the mall?
She has to go there at 7:00.(改为否定句）
She _____ _____ _____go there at 7:00.
答案
when do
doesn't have to
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．
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