10. Fewer people have chosen Paris for their vacation lately (OPT)
→ There has **been a lower number of people opting for Paris for their vacation lately**.

11. I regret telling you my secret.
→ I wish **I hadn't told you my secret**.
→ I would sooner **not have told you my secret**.
→ I would prefer **that I had not told you my secret**.
→ If **only I had not told you my secret**.

12. Everybody knows that they are going to demolish this theater. (PULLED)
→ It is common **knowledge that this theater is going to be pulled down**.

13. Perhaps Peter caught a cold last week. (COME)
→ Peter **may have come down with a cold last week**.

14. Mr. John smoked until he was 40.
→ Not **until he was 40 did Mr. John stop smoking**.
→ (GAVE) It was **at 40 that Mr. John gave up smoking**.

15. There are beliefs that this herb can heal even bad injuries.
→ This herb **is believed to heal even bad injuries**.

16. When I arrived in Paris, I phoned my best friend. (CALLED)
→ On **arriving in Paris, I called my best friend**.

17. It was careless of Jack to leave medicine around the house.
→ John **was careless to leave medicine around the house**.

18. It is very likely that Mary will enter the beauty contest soon. (GO)
→ Chances **are high that Mary will go into the beauty contest soon**.
→ In all **likelihood, Mary will go into the beauty contest soon**.