KEY Overview of the questions
1. "When Jim moved to France he became happy again."
Jim's mother said that Jim had become happy again when he had moved to France.
2. Mrs DeWitt:"You murdered my husband!"
Mrs DeWitt accused him of murdering her husband.
3. "I didn't kill your husband!"
The defendant denied killing her husband. OR The defendant denied that he had killed her husband.
4. "We could find a solution for this problem."
I suggested that we find a solution for this problem. OR I suggested finding a solution for this problem.
NOTE: could = suggest in this case, so don't use both!!!
5. Tim:"I will tidy up my room tomorrow, mum!"
Tim promised his mum that he would tidy up his room the next day. OR Tim promised his mum to tidy up his room the next day.