IheartheyaregoingtoLondon,butIdon’tknow

問題詳情：

I hear they are going to London, but I don’t know ________ they will stay there.

    A．how soon                                           B．how often

    C．how long                                            D．how fast

【回答】

C

知識點：相似 相近詞比較

題型：選擇題