1. The books in my office is very valuable to me. => are
2. All of the windows in our house were broken in the earthquake
3. All of the employees in that company is required to be proficient in a second language. => are
4. A lot of the people in my class works during the day and attends class in the evening. => work
5. Listening to very loud music at rock concerts have caused hearing loss in some teenagers.
6. Many of the satellites orbiting the earth is used for communications. => are
7. The news about the long-range effects of air pollution on the development of children's lungs is disturbing.
8. Chinese have more than fifty thousand written characters.
9. About two-thirds of the Vietnamese works in agriculture.
10. A number of planes were delayed due to the snowstorm in Denver.
11. The number of passengers affected by the delays was great.
12. More men than women are left-handed.
13. Every girl and boy are required to have certain immunizations before enrolling in public school. => is
14. Seventy-five percent of the people in New York City lives in upstairs apartments, not on the ground. => live
15. Unless there are a profound and extensive reform of government policies in the near future, the economic conditions in that country will continue to deteriorate. => is
16. While I was in Paris, some of the best food I found were not at the well-known eating places, but in small out-of-the-way cafes. => was