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--Excuse me, is this seat taken?

--            ．That man got his books and left a few minutes ago．

A．I’m afraid so                                           B．I don’t think so

C．I have no idea                                            D．I hope not

－Excuse me, is this seat taken?

－________. That man got his books and left a few minutes ago.

[　　]

---Excuse me, is this seat taken?
---______. That man got his books and left a few minutes ago.

A．I’m afraid so

B．I don’t think so

C．I don’t know

D．I hope not