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20．______ will they finish printing the newspaper？
In about five hours．（　�。�
A．How muchB．How often．C．How longD．How soon

分析 --他們多久才能印刷完報紙？
--大約五小時之后．

解答 答案：D．考查疑問詞組．句意"--他們多久才能印刷完報紙？--大約五小時之后．"．how much多少錢．how often多久，對頻率提問．how long多久，對一段時間或長度提問．how soon"多快/多久以后"，其后用in加一段時間來回答．根據回答"大約五小時之后"，可知，對in+一段時間，表示一般將來時態(tài)提問，用疑問詞組how soon多久．答案是D．

點評 疑問詞組通常用來構成疑問句，要根據回答的具體內容進行選擇，注意一些固定搭配，分清疑問詞的用法．

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