答案注意格式,答案格式为: 题号. 答案 比如 1. ins and outs 10. The rent for the apartment is reasonable; besides, the are included, which means you don’t have to pay anything for gas, electricity and water. 11. A central heating and cooling produces warm or cool air in one central area and distributes it throughout the building. 12. We were deeply shocked and saddened when we the sudden death of our newly retired professor. 13. If you know the of something, you know all the details about it and understand how it works. 14. It’s long been proven that we can any project if we break it up into small pieces and do the project one piece at a time.