单项选择（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. What ___wonderful world it would be if all countries in the world could live in ___peace with one another.
A. a;\ B. the;\ C. a; the D. the; the
22. The sooner we students ___to the new school, the better it will be ___our studies.
A. adapt; for B. adjust; to C. adopt; for D. admit; to
