Question

---Bob, are you free at the moment? I have to ask you some questions．

---________．

1. A.
   It’s a pleasure
2. B.
   Ask, please
3. C.
   Help yourself
4. D.
   Yes, go ahead

Answer 1

D
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。