1. Quan said: "we must do our homework every day"
--> Quan said that we had to do our homework every day
2. My mother said:'I grow this tree my self'
---> My mother said that she grew that tree her self
3. Anna said :'sally doesn't go to school because she's ill'
---> Anna said that Sally didn't go to school because she was ill
4. He said :'I'm taking my final exam tomorrow'
----> He said that I was taking his final exam the next day
5. Miss Ha said :'I've finished my work for 30 minutes'
----> Miss Ha said that she had finished her work for 30 minutes