What'shappenedtoyou？Couldyoutell
ould you tell me________? A.Where is Mr.Black B.What's happened to you C.When did the school bus leave D.What's your trouble 答案给的D，B项能选？为什么
因为从句的问句是陈述句的语序,A和C都是问句的语序,都不对 B和D都是陈述句的语序,所以都能选