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. Some people fear that air pollution may bring about changes in weather around the world .
A. / ; the B. the ; / C. an ; the D. the ; a
22. The shop is just around the corner and you won’t miss it .
A. bicycle’s B. bicycle C. bicycles D. bicycles’
23. No progress was made in the trade talk as neither side would accept the condition of .
A. others B. the other C. either D. another
24. He is running the wind Tom running the right .
A. down ; and ; on B. against ; with ; on
C. for ; with ; in D. with ; while ; to
