Choosing the right dictionary depends on_______you want to use it for.

A.what                         B.why                          C.how                          D.whether

A


解析:

what引導賓語從句,作介詞on的賓語。what在從句中作for的賓語,表示選擇正確的詞典依賴于你使用它做什么,故選A項。why引導賓語從句時,在從句作原因狀語,意為“為什么”。how引導賓語從句時,在從句作方式狀語,意為“如何”。whether引導賓語從句時,意為“是否”。

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