单选题Could you tell me________

问题补充：

单选题Couldyoutellme___________?A.who can help us organize the showB.how long you have bought the carC.what was your favorite subjectD.how many students are there in your class

答案：

A解析考查间接引语与时态。B 选项中bought不能与how long连用， C选项中语序没有改变。D 选项中语序没有发生改变。