Are you looking for a book for your son?
很高兴为你解答!
多谢你的问题!不用一般疑问句。A.What are you doingB.What do you wantC.What do you likeD.Can I help youD 买书很高兴为你解答！老师祝你学习进步！望采纳，多谢你的问题！^_^