1. Only when he was half way through the exercise did he realize how difficult it was.
2. The floods made further progress impossible.
3. The place was much more difficult to find than we had expected.
4. We'll soon find a solution to/overcome our present financial problems.
5. The older he got, the more his memory failed him.
6. Were it not for the money, the job wouldn't be worthwhile
7. It looked though the room had been unoccupied for weeks.
8. My mother gave birth to only one child
9. Much to our regret,we have to inform you that your appication has not been succesful