—Could you tell me ?
—More than a month.
A. when was Yangzhou-Taizhou Airport built
B. how often you go to Yangzhou-Taizhou Airport
C. how soon will Yangzhou-Taizhou Airport be built
D. how long Yangzhou-Taizhou Airport has been in service
网友回答
A. when was Yangzhou-Taizhou Airport built
B. how often you go to Yangzhou-Taizhou Airport
C. how soon will Yangzhou-Taizhou Airport be built
(答案→)D. how long Yangzhou-Taizhou Airport has been in service
解析：本题考查宾语从句。首先，根据宾语从句的语序应用陈述句式，可排除A、C两项；其次，根据答句句意：一个多月，表示对一段时间提问，可知本题的引导词是how long，故选D。