he was taking his saving to the post office.he keeps his savings______the post office

he was taking his saving to the post office.he keeps his savings______the post office
在上一句话里有四个选择应该怎么回答我有点不确定大家给我解释一下谢谢． 1.to 2.in 3.on 4.into/
_____(in time),all sam's money was returned.
这是选择答案代替In time 这个词的我不知道该选哪个．
1.at time 2.after a time 3.with the times 4.a long time /
time 和with the time它们本身自己带着多少意思那就更谢谢了．