【题目】I am interested in_________ you have improved your spoken English in such a short time.
A.howB.whichC.whenD.if
在线课程【答案】A
【解析】
考查宾语从句。句意：我对你如何在这么短的时间里提高你的口语感兴趣。A. how怎样，如何；B. which哪一个；C. when何时；D. if是否。分析句子可知，此处是宾语从句连接词，从句_________ you have improved your spoken English in such a short time的成分完整，但缺少“如何”之意，应用how连接，故选A项。