— 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 know |
| C．I don’t think so | D．I hope not |
— 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 know |
| C．I don’t think so | D．I hope not |
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