阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
It was a burning-hot，summer’s day and I was longing to go swimming at the local pool．Instead，I was riding in back seat of the car as my parents drove to a friend’s house．They were going to lend a hand to a church work camp(repair)her roof and porch．
The work camp was (main)made up of teenagers had given up part of their summer vacation to help others． an eight-year-old boy，I (spend)most of that afternoon sitting in the shade while they sweated in the sunshine．They were cutting boards and hammering them in place．They were pulling out rotted tiles(瓦片)and nailing in new (one)．They were doing it all with an energy of joy．
Finally our friend called me into the house  (help)her pay them with the two things she could afford：sweet tea and smiles．By the end of the day the three gallons of tea were gone．The workers were out of nails and paint，but the job was (do)．There was one thing left，however．It was the one thing that you never run out of．It was Love．I went home with a heart full of it and was (happy)than any day at the pool could have made me．