Mabel was a naughty boy and he was not good at his study. “Could do better” were usually the 1 at the bottom of his report card. His parents 2 Mabel's marks a lot. How they wished Mabel made a little progress. But whenever they got his report card, they were quite disappointed, 3 their heads.

     At the end of the term, the report card would be sent home. Mabel wished to find a safe place away from the 4 faces of his parents. One morning, when Mabel was still in bed, his mother rushed into his room, holding the report card in hand. “Well done, son. You are number one in the class. You are our 5.” She gave Mabel a big kiss. Mabel could not believe it, 6 he looked at the report card carefully.

     Very soon, Mabel found out it was Manuel's report card, not his. The teacher had made a 7. His mother had left, busying calling all the family about the 8 news. Mabel wondered what the right thing to do was. He thought for a while, whether to please his parents 9 to be an honest boy. Finally, he decided to tell his parents the 10.

材料一：下图为东南亚局部图及某区域水系图

材料二：洞里萨湖是东南亚最大的淡水湖，其通过洞里萨河与湄公河相连，是湄公河天然的蓄水池。湖泊的水位季节变化显著。

一件工作，甲每天做8小时30天能完成，乙每天做10小时22天就能完成．甲每做6天要休息一天，乙每做5天要休息一天，现两队合做，每天都做8小时，做了13天（包括休息日在内）后，由甲独做，每天做6小时，那么完成这项工作共用了____ 天．