Choosing the right dictionary depends on you want to use it for.A. whatB. whyC. howD. wh

问题补充：

Choosing the right dictionary depends on you want to use it for.

A. what

B. why

C. how

D. whether

答案：

(答案→)A. what

B. why

C. how

D. whether

解析：what用以引导宾语从句，用作介词on的宾语，其中的what在从句中用作介词for的宾语。