Transform the sentences into indirect speech.
1.Mr.Morgan asked David: "What are you doing near my room?"
2.Robert said to his sister: "Would you help me to finish the work?"
3.The guide explained :" The architect designed this palace last century."
4.The boy promised to the teacher :" i will have learnt the poem by the next lesson."

1.Mr.Morgan asked David what he was doing near his room.2.Robert asked his sister if she would help him to finish the work.3.The guide explained that the architect had designed that palace the previous century.4.The boy promised to the teacher that he would have learnt the poem by the following lesson.