Cần giải gấp ạ

1. A new bridge (4.builds) ___across the river. They (5.started)____building it last month and the bridge (6.is expected) _______to open next year. 2. It is a cool autumn day today. The leaves (7.are falling). 3. I didn't know how (8.to explain) __________about the word to them. 4. I (9.have not answered) ____________ her question for the last two months. 5. Why do you make him (10.pay) ________for the damage? III. 1. If we don't economize on electricity, there will be power cuts. 2. Congratulations! You are offered the position. 3. In Britain education is compulsory between the ages of 5 and 16. 4. I am reading an article talking about UFO appearances. 5. My new classmate is sociable kind and generous. 6. There is no easy solution to this problem. 7. Could you straighten the picture over the sofa? 8. I believe in your improvement 9. A lot of products are produced yearly. 10. How many competitors entered the race? IV. 1. She was waiting nervously in the waiting room for the interview. 2. He suggested that council tenants should be allowed to buy their houses. 3. I haven't come back to London since my father last visited me. 4.Though having a job, she doesn't make enough money to support her four children.(or "Despite having a job, she doesn't make enough money to support her four children.") 5.The sooner you leave, the earlier you will arrive at your destination.(or "The sooner you leave, the sooner you will arrive at your destination.") 6.I never have anything to write with because I'm always losing my pens.(or "I never have anything to write with because I always lose my pens.") 7.Which one is the more modern of these two buildings?