8.He said, "I will have finished this paper by tomorrow."
→ He said that he would have finished that paper by the next day.
9.He said, "They won't sleep."
→ He said that they wouldn't sleep.
10.She said, "It is very quiet here."
→ She said that it was very quiet there.

he said he have finished that paper by the next day
he said they don't sleep
she said it was very quiet there

he said he have finished that paper by the next day
he said they don't sleep
she said it was very quiet there