he was taking his savings to the post office.he keeps his savings( )the post office
题目
he was taking his savings to the post office.he keeps his savings( )the post office
A to B in C on D into 请问选哪个,然后分别说出对与错
答案
选B 没有什么特别的原因
有个这样的搭配 keep sth. in一直把某物放在……里
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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