This morning,my foreign teacher Robert and I went to the park by taxi.On 【1.seen改成seeing】 the beautiful trees and flowers,Robert couldn't find 【2.加上his】camera gone.He searched all over his bag but just couldn't find 【3.one改成it】.Suddently it came to me 【4.加上that】he might have left it in the taxi.【5.lucky改成luckily】,we found 【6.去掉out】 the ticket and immediately got【 7.in改成to】 the taxi company.About half an hour【8.late改成later 】,the dirver returned with the camera.Both of us were grateful【 9.for改成to 】the driver.Rober and I 【10.enjoy改成enjoyed】 ourselves during the rest of the day .