he was taking his savings to the post office.he keeps his savings( )the post office

问题描述:

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

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