1. She said that her sister doesn't know how to discuss with their parents.
2. The policeman asked me that why I was carrying that bag yesterday.
3. The soldier said that his friends don’t know where he was.
4. My sister asked me to get out of her room.
Step-by-step explanation:
Reported speech or indirect speech are that consists the clause speech of expressing the "content of statements, questions or comments", without quoting the detailed speech as same as direct speech.