the school's flood fighting rescue donation team received a large amount of unsigned donation  After searching in many ways,it can be concluded that it was donated by one of Zhao,Qian,Sun,and Li  Upon inquiry,Zhao said It was not my donation,Qian said It was donated by Li,Sun said It was donated by money,Li saidI definitely didn't donate
Finally, a detailed investigation confirmed that only one of the four people was telling the truth
Zhao is telling the truth, Sun donated it