1.My teacher told me that I had made a great progress in the exam.
【said to=>told】
2.I didn't know that he had been back for a week.【what=>that因为从句不缺成分】
3.Could you tell me where you often play tennis?【去掉do因为从句的连接词后面应该用陈述句的语序,不用把do提前】
4.He told me that he had called me the night before.【I=>he,间接引语转述时要改变原来引号里的主语】