1. She can't swim because the water is very cold.
--> Were the water warm, she could swim.
2. They no longer live in that town.
--> No longer do they live in that town.
3. It's better if I cook instead of eating out.
--> I'd rather cook than eat out.
4. The sentences still need correcting.
--> The sentences haven't been corrected.
5. What is the purpose of his working so hard ?
--> What is the reason why he is working so hard?
6. They could have saved more time if they had travelled by plane
--> They failed to save more time because they hadn't travelled by plane.
7. I'm worried about Jason because he just watches TV all day.
--> I'm worried about Jason because all he