A、Because his vision is very poor. B、Because he was too frightened. C、Because his eyes were covered. D、Because the robbers’ face

W: Good morning, sir. I understand that you have been robbed.
M: I certainly have.
W: When did that happen?
M: About two hours ago.
W:(12)Why didn’t you report it?
M: I couldn’t. I was bound.
W:(12)Please tell me exactly what happened.
M: I was sitting in this room watching television when someone knocked on the door. Without thinking, I opened it.
W: That wasn’t very wise, sir.
M: I know.(13)I was expecting my wife, you see, and thought it was her.
W: You should never open a door without looking to see who it is.
M: Yes, I know, I regret it very much.
W: What happened?
M: Two men pushed into the flat. One of them threatened me with a knife while the other bound me.
W: Can you remember what they look like?
M: I’m afraid not.(14)They were both wearing stockings over their faces.
W: What did they take?
M: My wallet, with $300 in it, my wristwatch, some of my wife’s jewellery from our bedroom, and a silver photo frame.
W: They don’t seem to have done much damage to the flat.
M: No.(15)They had just begun to search my house when the dogs next door began to bark. They ran off then leaving me bound. It was some time before my wife returned and released me. I phoned the police at once.
W:(12)My men began searching the area as soon as we received your call. I can’t promise you that we’ll recover your property but we’ll certainly do our best.
12. What does the woman do?
13. Why did the man open the door without thinking?
14. Why can’t the man remember what the robbers look like?
15. Why did the robbers leave in a hurry?