1. If only your sister could come as well.
2. It looked as if the house had been unoccupied for several months.
3. He was too tired to watch the whole film.
4. I was the last person to hear about the accident
5. It's very important to keep the enviroment clean
6. If only you had told me earlier.
7. In spite of being short of money, I’ll lend you some.
8. I warned the boys not to swim out too far.