Complete the sentences using a preposition + gerund of the following verbs: cause; pay; escape; pass the exam; interrupt;

1. It took us a long time but we succeeded in solving this problem. 2. I’ve always dreamed of living in a small house by the sea. 3. The driver of another car accused me of having caused the accident. 4. There was a fence around the lawn to stop people walking on the grass. 5. Forgive me interrupting you but may I ask you something? 6. Where are you thinking of spending your holiday this year? 7. The guards were not able to prevent the prisoner from escaping. 8. I wanted to cook the meal by myself but Dave insisted on helping me. 9. I’m sorry we’ve had to cancel our game of tennis tomorrow. I was really looking forward to playing. 10. They insisted on paying for the meal. 11. I congratulated Ann on having passed the exam. 12. They accused me of telling lies.