1 .

A. maintain 　　　B. effective　　　 C. ensure 　　　D. boredom 　　　AB. confusion AC. communicate 　　　AD. adequate 　　　BC. remedy 　　　BD. historical 　　　CD. preserve ABC. balanced

1. The room was in ________ after the birthday party. So I have to do a lot of cleaning work tomorrow.
2. I don’t want to live in the small town, for it is uninteresting and full of ________.
3. The girls ________ their room tidy and neat, with everything in order.
4. The government hasn’t yet found a ________ for such situations.
5. Many passengers on the bus didn’t take ________ food with them, which made things worse.
6. To ________ that he will arrive at the airport on time to meet his friend, he left home two hours in advance.
7. Many historians are against this project and appeal to ________ these old buildings.
8. Good manners are not only about the way we talk, but also about all other things we do when we ________ with other people.
9. She published ________ novels, as well as a non-fiction study of women in the British Empire.
10. Advertising is often the most ________ method of promotion.