第二部分：英语知识运用（共两节, 满分45分）
第一节 单项填空（共15小题，每小题1分，满分15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, 并在答题卡上将该项涂黑。
21. We are sparing no efforts to create ______ more peaceful and more advanced world, ______
place where everyone enjoy his life and freedom.
A. the；a B. /；the C. a；a D. the；the
22. —I wonder if you could go to the movie with me.
—Oh, just leave me alone. I _______ a composition all the morning and haven’t finished yet.
A. write B. was writing C. have written D. have been writing
