Ⅱ.单项选择（共15小题，每小题1分）请选择最佳答案，将其标号在答题卡上涂黑。
21.______ the number of cars, only _____small number of people have attended the meeting.
A．Judging from; a B．Judged from; a
C．Judging from; the D．Judged from; the
22. Nowadays more and more people prefer ______ out to enjoy nature rather than stay indoors at the weekends.
A. to go B. going C. go D. to going
23. The Australian boy has a good _____ of Chinese and can communicate with others freely.
A. request B. command C. demand D. usage
