of you has a dictionary,so you can look up the new words in

首先根据后面可知是有字典的,排除A
B的话eyerybody of you用法错误了吧?
C和D的区别的话
each可作代词和形容词,而every只能用作形容词,如可以说each of these dictionaries或each one of these dictionaries,但不能说every of these dictionaries,该用every one of these dictionaries
（这条是百度文库里的every和each的差别）
所以选D（个人觉得,不过网上有的说B的用法也是有的,后面都是跟动词单数,不过我觉得至少each of挑不出毛病吧,看你自己选啦）