介词填空you must hand___your homework____time.
题目
介词填空you must hand___your homework____time.
there was a little girl sitting_____to him.
we haven't got a recorder,would you like to buy___（we,us）one?
they walked____（cross,across）the street and went into a shop.
look!the pen is___（next,beside）the book.
答案
in,on
next
us
across
beside
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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