请用以下单词或词组填空，必要时需要变化形式：compensate transform estimate response access analyze strain meansadoptat a disadvantage add to take the lead visit withaccount for be tied to1. The president said that they were trying to their university into a top school in the country.2. Students in the university have free to the computer lab.3. Many young mothers the home and children.4. We wrote to the manager to complain about the poor service, but received no yet.5. Homework should not be used as a of controlling children.6. The teacher our mistakes in order to help us find the causes.7. Her refusal has the uncertainty of the situation.8. If you want to improve your situation, you must a positive attitude.9. He is so busy that he hardly has time to his friends.10. The team for the first time this season.11. According to the survey, students and children more than 50% of the visitors last year.12. With so many changes, it is very difficult to the exact cost of this project.13. Nothing can for the loss of one’s health.14. His inability to speak English put him in the interview.15. He spoke so softly. I to hear what he was saying.