Преобразуйте предложения в косвенную речь. 1- she said: " i don't know where i have lost my hotel key." 2- the firefighter said: " the main cause of fires is carelessness". 3- we will have finished building by the end of the year",they said to me. 4- my mather said to me: " go to bed".

1- She said she didn't know where dhe had lost her hotel key.
2- The firefighter said the main cause of fires was carelessness.
3- They said to me they would have finished building by the end of the year.
4- My mother said to me to go to bed.