题目内容：

阅读下面短文,在空白处填入一个适当的词,或填入括号中所给单词的正确形式（最多限填3个单词）。

Tony and Robert are neighbors. Their families sometimes have 1. (party) or picnics together. One day, Robert asked Tony for help, saying that he needed 50,000 yuan for an investment投资）．

At first, Tony 2. (refuse). But after Robert begged him several times, he lent the money to Robert. However, Tony forgot to ask for a receipt（收据）for the money. Robert said he would pay Tony back in six months. However, he failed 3.(pay) Tony back on time. Tony was very angry. 4. Tony went to ask him about the money, he said that he had never borrowed any money 5. Tony. Tony was much 6.(angry).

He went to his lawyer and said, "My neighbor owes (欠) me 50,000 yuan and he won't pay up. 7. should I do?"

"Do you have any proof （证据） that he owes you money?" the lawyer asked.

"No," Tony said, "That's why I come here."

"OK, then write him a letter to ask 8. he could return the 5,000,000 yuan at once ." the lawyer said.

"But I only lent 50,000 yuan to 9.," Tony said.

"10. (exact). That's what he will say when he replies to your letter and then you'll have your proof!"