1. We wished we hadn't bought this house.
⇒ We regretted buying this house.
2. He is such a slow speaker that we get bored.
⇒ He speaks so slowly that we get bored.
3. They were too excited to sleep.
⇒ They were so excited that they couldn't sleep.
4. We couldn't get nearer because of the dog.
⇒ The dog prevented us from getting nearer.
5. J find it difficult for me to find a better solution.
⇒ I have difficulty in finding a better solution.