I wanted to know where to get a dictionary(改为同义句)

1、I wanted to know where to get a dictionary.(改为同义句)
I wanted to know where I could get a dictionary.
我想知道我能在哪里买到一本字典.
2、His home is among（改为between） post office and the supermarket.(改错)
他的家在邮局和超市之间.
among是在三者以上之间,而这里只有两个地方,应该改为between,即在两者之间.