in the front of 的反义词是什么是in the back of 还是at the back of

in the front of 的反义词是什么
是in the back of 还是at the back of

at the back of 是对的

in/at the back of

at the back of

in the back of

Should be
Behind!
however, you may use
at the back of

参见：
http://zhidao.baidu.com/question/82130020
上面写得很全了。

in the back of

两个都不是。是behind.