1-The teacher said to me that i hadn't done my homework well.
2-she said that i would...
3- the librarian said that i had to take this book and read it(ну это просто другой способ как составить,но так тоже можно,хотя это и немного хитро)
4-the doctor said to pete didn't go for a walk that day
5- pete said to his friends when the were leaving Moscow.( я предполагаю,что там вместо pete said должно быть pete asked)
6-i asked helen if she had gone shopping the day before.