Mr. Bernard told me not to ________ dictionaries too often when we read novels in English.

1. A.
   turn over
2. B.
   turn on
3. C.
   turn to
4. D.
   turn off

从所给的四个选项中选择最佳答案

Mr Bernard told me not to ________ dictionaries too often when we read novels in English．

[　　]

A．turn over　　　B．turn on　　　C．turn to　　　D．turn off