二、单项填空。（共10小题，每小题1分，满分10分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
13. —Are you a teacher?
— No, but I . I worked in a middle school for three years.
A. am B. will C. do D. was
14. People in the city do not know the pleasure of country life.
A. live B. living C. lived D. to live
15. The dishes lay on the floor.
A. breaking B. broken C. broke D. break
16. Peter is very angry about to the party.
A. not being invited B. not to be invited C. not inviting D. being not invited
17. You should keep her of what is going on here.
A. informed B. informing C. to inform D. inform
18. To get there in time, they came all the way.
A. run B. ran C. running D. to run
19. It is said that the building's style is modeled the great pyramid.
