二．单项填空：（每小题1分，共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 don’t allow ___in the office. But you are allowed ____in the rest room.
A. smoking, smoking B. to smoke, to smoke
C. smoking, to smoke D. smoke, smoking
22. It was _____that we went camping on the mountain.
A such nice weather B. so nice a weather
C. such a nice weather D. too nice weather
23．The patient was ___of losing his life and had to be operated on at once.
A. in danger B. in the danger C. out of danger D. out of the danger
24. Since then the number of people taking driving lessons ____20.
A. has increased to B. increases by
C. has increased by D. have increased by
25. My sister ____a good chance to go abroad for further study of English.
