题目内容：

A lady, in a plain（朴素的）cotton dress, and her husband, dressed in a homemade suit, stepped off a train. They walked into a university president’s office without an appointment(约定).

“We want to see the president,” the man said softly.

“He’ll be busy all day,” the secretary said.

“We’ll wait,” the lady replied.

For two hours, the secretary didn’t pay any attention to them, hoping the couple would give up and go away. They didn’t. The secretary finally decided to tell the president about it. The president agreed to meet them. But clearly, he didn’t want to do so. When the couple went into the president’s office, the lady said: “We had a son who ever studied in this university for one year. He loved here very much but he died last year. We would like to give a building to the university.”

The president glanced at（瞥了一眼）the cotton dress and homemade suit, and then said, “A building! Do you have any idea how much a building costs? We have over seven and a half million dollars worth of buildings at the university.” For a moment the lady was silent.

The president was pleased. He thought the couple could go away now.

The lady turned to her husband and said quietly: “Is that all it costs to start a university? Why don’t we just start our own?” Her husband nodded.

根据短文内容，回答下列问题。

1.Where did the conversation happen?

2.Why did the couple want to see the president?

3.How much are the buildings at the university worth?

4.How did the president feel when he found the lady was silent?

5.At last, what did the couple probably plan to do?