第二部分：英语知识运用（共两节，满分35分）
第一节：单项填空（共15小题；每小题1分，满分15分）
请认真阅读下面各题，从题中所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。
21. If you want to have _____ second try, which I think is very necessary, the situation will surely take on ___ new look.
A. a, a B. a, the C. the, a D. /,the
22. The market for dust masks and air purifiers is _____in Jiangsu Province because it has been covered in thick fog and haze for several days.
A. booming B. depositing C. swapping D. clarifying
23. The vast ____ of the unemployed workers are pushing for the solution to the problem, ____ they want to see solved as soon as possible.
A. most, that B. majority, which C. gravity, while D. amount, when
24. As a hard-working and confident employee, I am sure Johnson will ____ a successful leader.
