"philip didn't pass the end-of-term exam,which upset him very much.”中upset为何不加"s"?

philip didn't pass the end-of-term exam,which upset him very much.”中upset为何不加s? 填空：Philip didn't pass the end-of-term exam,which u----him very much.为什么upset”不要加”s”？ Alice didn't pass the english l'm sad because l ___ the exam a.don't pass b didn't pass ——-(luck),he didn't pass the english test. I didn't pass the test同义句 Tom didn't pass the ______(最后的）exam. he is even (luck),he didn't pass the exam. l didn't pass the exam同义句 U___she didn't pass the end of year exam Bad___(luck)!I didn't pass the exam again. He didn't pass the exam的同义句 I didn't pass English exam 写出你的忠告 To my s ,he didn't pass the exam The exam was __he didn’t pass it. To my s(),Shirley didn't pass the exam. 填空：Sam didn't pass the exam._____ _____ Peter. I didn't pass the exam.=I ___ ___pass the exam.(didn't pass画了横线）