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1. Now I don't go climbing as much as I used to when I was younger./ Now I don't go climbing as much as I did.
2. There used to be dreadful fogs in England.
3. We haven't decorated the room for years.
4. The other guests will start dinner before we arrive.
5. John is too young to join the club.
7. It is very necessary for him to be to blame for his mistakes.
8. It was obligatory for him to pass his intermediate level English examination.
9. It was their request that the mother came and lived with them to take care of their children.
10. You were wrong to lie to him.
11. Isabel denied lending Robert her pen.