1.She said, “I can’t find my umbrella”.

=> She said that she couldn't find her umbrella.

2.They said, “We are learning English now”.

.=> They said that they were learning English then.

3.“My friend is coming next week”, Tom said.

=> Tom said his friend was coming the next week.

4.“I’ll help my mum with housework this weekend” he said.

=> He said he would help his mum with homework that weekend.

5.“We shall overcome this difficulty”, they said.

=> We said we should overcome that difficulty.

6.“My father is a doctor here”, my friend said.

=> My friend said her father was a doctor there.

7.“I am going on holiday tomorrow”, the boy said to his neighbor.

=> The boy told his neighbor that he was going on holiday the next day.

8.“You will have to finish all these exercises before next week”, the teacher said to his students.

=> The teacher said to his students that he would have to finish all these exercises before  the next week.

9.“I came back here early yesterday,” she said.

=> She said she had come back there early the previous day.