-Couldyoutellme          ？       -You'dbetterkeepadiary...

问题详情：

- Could you tell me           ？

        - You' d better keep a diary in English as often as possible.

         A. when I can improve my written English

         B. how I can improve my written English

         C. if can I improve my written English

【回答】

B

知识点：宾语从句

题型：选择题