The doctor told me to take the medicine_____.

A. every fourth hours    B. each fourth hour   

C. each four hours      D. every four hours

 The doctor told me to take the medicine 　　　　.

A．every fourth hours

B．each fourth hour

C．each four hours

D．every four hours

The doctor told me to take the medicine 　　　　.

A．every fourth hours                      B．each fourth hour

C．each four hours                        D．every four hours

 The doctor told me to take the medicine 　　　　.

　A. every fourth hours          B. each fourth hour

　C. each four hours                D. every four hours

从所给的四个选项中选择最佳答案

The doctor told me to take the medicine ______ ．　　　　　　

[　　]

A．every four hours　　　　　　B．four hours each

C．four each hour　　　　　　 D．every fourth hours