1. The last time I saw him was three years ago.
→ I haven’t seen him for three years.

2. She was too tired to finish her homework.
→ She was so tired that she couldn’t finish her homework.

3. It’s a good idea to arrive early at the airport.
→ You should arrive early at the airport.

4. The book is so interesting that I can’t put it down.
→ The book is so interesting that I can’t put it down.

5. He doesn’t like coffee, and she doesn’t either.
→ Neither of them likes coffee.

6. I’ve never been to a more beautiful place than this.
→ This is the most beautiful place I’ve ever been to.

7. I last met him when I was in New York.
→ I haven’t met him since I was in New York.

8. The students are talking loudly.
→ The students are talking very loudly.

9. She didn’t go to the party because she was feeling ill.
→ She didn’t go to the party because of her illness.

10. I’ve been waiting for you for an hour.
→ I’ve waited for you for an hour.