赵某孤身一人，因外出打工，将一祖传古董交由邻居钱某保管。钱某因结婚用钱，情急之下谎称该古董为自己所有，卖给了古董收藏商孙某，得款10000元。孙某因资金周转需要，向李某借款20000元，双方约定将该古董押给李某，如孙某到期不回赎，古董归李某所有。在赵某外出打工期间，其住房有倒塌危险，因此房与钱某的房屋相邻，如该房屋倒塌，有危及钱某房屋之虞。钱某遂请施工队修缮赵某的房屋，并约定，施工费用待赵某回来后由赵某付款。房屋修缮以后，因遏百年不遇的台风而倒塌。年末，赵某回村，因古董和房屋修缮款与钱某发生纠纷。请回答下列问题：
钱某请施工队加固赵某的房屋，这一事实在钱某和赵某之间形成何种法律关系？
参考答案：
钱某和赵某之间形成无因管理行为而产生的债权债务法律关系。
解析：
在钱某和赵某之间形成无因管理之债的关系。本题考无因管理。《民法通则》第93条规定：“没有法定的或者约定的义务，为避免他人利益受损失进行管理或者服务的，有权要求受益人偿付由此而支付的必要费用。”
| 完形填空 | ||||
| No visitor was left in the museum now, and John was walking around to check if everything was all right. 1 he saw a beautiful painting lying on the floor. John 2 and gave it to the curator (馆长). The curator called several museums to check if it was a stolen painting 3 no one claimed (认领) it. So the curator  decided to hang it. 4 said it was beautiful and had a very deep meaning. The curator was 5 to have such a painting in his museum and congratulated John on his discovery. Some weeks later a woman and her 6 came to the museum. While they were looking at that painting, the little boy began to 7 . The curator went over and asked what was making him so sad. The child pointed to 8 and said, “That’s my painting and I want it back.” “Yes,” said his mother. “He 9 it on the floor a few weeks ago. If you look carefully, you can see the name on the painting.” The curator 10 believe his ears when he heard the truth. | ||||
|