Idon'tknow

問題詳情：

 I don't know _______ you tell me________?

    A. how swim; what to do                      B. how to swim ; what to do it 

    C. how to swim; what to do                    D. what to swim; how to do

【回答】

C

知識點：非謂語動詞

題型：選擇題