答案输入格式为:xxx后加xxx 1. The children are taking active part in the English speech contest. 2. The ice is too thin for us to skate. 3. She married the man because what he had done for her. 4. The recorder needs be required before it can be used. 5. The farmers are very busy and they will stop working until dark. 6. We felt if we were going to fly. 7. I found strange that she had not come yet. 8. After we seated at the table, she suddenly felt a pain in her stomach. 9. I lent him the book I bought the day before. 10. We have friends over the world.