---Bob, are you free at the moment? I have to ask you some questions．---________．A.It’s a pleasureB.Ask, pleaseC.Help yourselfD.Yes, go ahead
网友回答
D解析考查交际用语。“It’s a pleasure．”是回答道谢的用语；B项不符合英语交际习惯；Help yourself．“请随便用；不要客气。”是对客人说的话。go ahead意为“请讲，请继续说或做某事”。故选D项。