sometime,sometimes,some times,some time 选词填空
题目
sometime,sometimes,some times,some time 选词填空
sometime,sometimes,some times,some time
I'll go to Shanghai_____next month
I stayed at mt uncle's for ____last year
____I help my mother do housework
I met her____in the sreet
答案
sometime曾经,将来某个时候.
sometimes有时,时不时
some times几次
some time一段时间
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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