单选题I didn’t know  &nbsp

问题补充：

单选题Ididn’tknowatfirst,butlaterwebecamegoodfriends.A.who is the boyB.who the boy isC.who was the boyD.who the boy was

答案：

D解析本题考查的特殊疑问句作为宾语从句，一是注意主句与从句在时态上一致，二是要用陈述句语序，故选D