We are taught that business letters should be written in a formal style           in a personal one.

1. A.
   rather than
2. B.
   other than
3. C.
   better than
4. D.
   less than

We are taught that business letters should be written in a formal style           in a personal one.

 We are taught that business letters should be written in a formal style___ in a personal one.

   A. rather than                 B. other than                C. better than              D. less than

We are taught that business letters should be written in a formal style           in a personal one.

We are taught that business letters should be written in a formal style _____ in a personal one.

[　　]

A．rather than　　　　B．other than

C．better than　　　　D．less than