There are several different ways to rewrite each sentence, but I'll just rewrite them two ways each.
Question 8.
- She took a dip in the ocean occasionally, since the water looked green and cool.
- The water looked green and cool, so she took a dip in the ocean occasionally.
Question 9.
- Everybody seemed to take it easy down South. What a wonderful winter vacation that was! (Only sentences I could think of)
Question 10.
- The memory of the trip lingered on when she went back to school the next day.
- When she went back to school the next day, the memory of the trip lingered on.