1. I was shocked that my house was demolished during the night. (HAD)
→ To **my shock, my house had been torn down during the night.**

2. When we produced the membership card, they welcomed us warmly.
→ Upon **producing the membership card, we received a warm welcome.**

3. I would like to have departed earlier. (OFF)
→ I wish **I had set off earlier.**

4. Jack's impoliteness led to their break-up. (OTHERWISE)
→ **Otherwise, they wouldn't have broken up if Jack hadn't been impolite.**

5. The party went on until midnight.
→ It was not **until midnight that the party came to an end.**

6. Mrs. Black was disappointed. Three of her sons hadn't visited her for ages. (PAID)
→ Mrs. Black, **disappointed, had not been paid a visit by three of her sons for ages.**