Passage Two
[29]When my husband was promoted, we put our house up for sale. Three weeks later, it was still on the market. I became a busy housekeeper. Every room had to be kept tidy, and dishes had to be washed and put away when used. Then one day the doorbell rang unexpectedly at 8 a.m. Sleepily, I opened the door and saw our agent standing there with a couple from New York. "There had been no time to call," he explained, "[30]because the couple had to catch a plane home."
The three people made their way past the dirty breakfast dishes on the kitchen table and into a bedroom with unmade beds. As I retreated into a bathroom to comb my hair, I heard the man say something to his wife. Then they both laughed.
Two days later, the agent phoned to tell me that the couple had bought the house. He repeated what the buyer had said when he handed over the check the following day: "[31]That house has a warm, lived-in feeling, just like ours."

Questions 29 to 31 are based on the passage you have just heard.
29. Why did the speaker sell her house?
正确答案：A
解析：短文开篇就说“丈夫升职后我们打算把房子卖了”，所以A正确。
30. Why did the agent call on the speaker so early in the morning?
正确答案：B
解析：短文中售房中介解释了原因：来不及给你打电话了，因为他们得赶飞机回家。故B正确。
31. Why did the couple laugh in the speaker's house?
正确答案：D
解析：买房的夫妻俩发笑的原因就在售房中介转述二人的话中，他们说“这所房子给人一种温馨的家的感觉，就像我们的一样。”由此可知选项D（他们看见了熟识的东西）为正确答案。